Emergence of Mands and Tacts of Novel Objects among Preschool Children

According to Skinner''s (1957) analysis of verbal behavior, the mand and the tact are functionally independent verbal operants, each of which is acquired through a unique history of reinforcement. The present study attempted to replicate the findings of Lamarre and Holland (1985), who empirically demonstrated functional independence of mands and tacts in typically developing preschool children. Five children participated. All were initially trained to complete two 4-piece assembly tasks. Four children were then trained to tact the four pieces that comprised one of the assembly tasks, and to mand for the four pieces that comprised the other task, using arbitrary vocal response forms. The remaining child received tact training only, and only on one task. The effects of training on the untrained operant were evaluated in a multiple-probe design across tasks. Following mand training, 4 out of 4 children reliably emitted tacts under testing conditions, while the effects of tact training differed across participants. The results differ from those of Lamarre and Holland, but are not necessarily surprising from the point of view of either Skinner''s analysis or more recent behavioral accounts of language. Future research should attempt to identify variables that affect transfer between mand and tact relations.     

A Behavioral Conceptualization of Aphasia

Aphasia is an acquired language impairment that affects over 1 million individuals, the majority of whom are over age 65 (Groher, 1989). This disorder has typically been conceptualized within a cognitive neuroscience framework, but a behavioral interpretation of aphasia is also possible. Skinner''s (1957) analysis of verbal behavior proposes a framework of verbal operants that can be integrated with the work of Sidman (1971) and Haughton (1980) to describe the language difficulties individuals with aphasia experience. Using this synthesis of models, we propose a new taxonomy of aphasia based on the observed deficit relations. Assessment and treatment implications are also discussed.     

Extending the Assessment of Functions of Vocalizations in Children with Limited Verbal Repertoires

The current study examined the effectiveness of an experimental functional analysis for assessing the functions of emergent vocal-verbal behavior in children with developmental disabilities. Experiment 1 consisted of a systematic replication of Lerman et al. (2005). Participants were 3 children with developmental disabilities, between the ages of 2 and 5 years, with limited vocal-verbal repertoires, who could emit at least two clear vocalizations. Results indicated that for all participants, targeted vocalizations functioned as mands, tacts, or both. The purpose of Experiment 2 was to address some of the limitations of Experiment 1 while using a different experimental design. Results of Experiment 2 suggested that participants'' targeted vocalizations served as tacts, echoics, or both. Results are discussed in terms of the utility of this methodology for the selection and development of effective language interventions as well as implications for our current knowledge of verbal behavior.     

Transferring Control of the Mand to the Motivating Operation in Children with Autism

Few studies have made use of B. F. Skinner''s (1957) behavioral analysis of language and precise taxonomy of verbal behavior when describing the controlling variables for the mand relation. Consequently, the motivating operation (MO) has not typically been identified as an independent variable and the nature of a spontaneous mand has been imprecisely described. The purpose of this study was to develop procedures to bring the mand response under the control of the relevant MO and therefore free it from the multiple controls that are more easily identified by practitioner''s who rely on Skinner''s analysis and taxonomy. Using a rolling time delay and prompt fade procedure both participants'' mand repertoires were successfully transferred to the relevant MO and a listener and described within the context of a behavioral analysis of language.     

Empirical Applications of Skinner’s Analysis of Verbal Behavior with Humans

In Verbal Behavior, Skinner (1957) provided a conceptual framework and taxonomy for the controlling variables of language that defined independent verbal operants by their functional relations to antecedents and consequences (rather than by topography or meaning). Although professional interest in this area has recently increased within the behavior analytic community, Skinner''s conceptual framework may not yet have fully impacted the experimental literature. This quantitative review of the literature examined the studies on verbal behavior that were empirical in nature, concerned with human verbal behavior, and addressed at least one verbal operant (e.g., mand, tact, echoic, autoclitic, and/or intraverbal behavior) within the experiment. The results of this review suggest that a growing body of research exists to support many of the tenets of Skinner''s conceptualization and taxonomy but many areas of verbal behavior research have yet to be addressed. Continued research in this area is crucial for the development and implementation of effective verbal behavior interventions for people with disabilities.     

The effects of specific versus nonspecific reinforcement on verbal behavior

The current study is a systematic replication and extension of previous research on the differences between specific (mand) and nonspecific (tact) reinforcement. The focus was on the role that these different consequences played in the acquisition of verbal behavior. Using both a within-subject and a between-subjects design, the current researchers trained eight essentially nonverbal individuals to tact a variety of foods under two different reinforcement conditions. The results showed no significant differences between the four matched-pairs in rates of acquisition, or in the resistance to extinction. However, subjects in the specific reinforcement condition emitted more untrained mand-compliance responses, while subjects in the nonspecific group demonstrated increased generalization to multiply controlled mand conditions. The results supported previous findings which indicated that the two types of consequences were equally effective in the acquisition of tacting, but each had unique features and implications for language training with nonverbal populations.

     

The effects of tact training on stereotypic vocalizations in children with autism

This study was a systematic extension of Karmali, Greer, Nuzzulo-Gomez, Ross, and Rivera-Valdes (2005) and Ahearn, Clark, MacDonald, and Chung (2007). We investigated the effects of a tact correction procedure on stereotypic vocalizations in 4 children diagnosed with autism who ranged in age from 6 to 16 years. Participants had limited vocal verbal repertoires and were primarily dependent on prompts for the emission of appropriate vocalizations. A multiple-baseline design across participants was used. Data were collected on instances of stereotypic vocalizations and independent tacts during baseline conditions and on instances of stereotypic vocalizations, independent tacts, and echoic-tacts during intervention. Procedural integrity and social validity data were also obtained. The results indicated a decrease in stereotypic vocalizations for 3 of the 4 participants and a slight increase in appropriate vocal verbal behavior (i.e., tacting) for all participants. The study provides support for the use of tact correction procedures to decrease stereotypic vocalizations and increase appropriate vocalizations in children with autism.     

The effects of alternating mand and tact training on the acquisition of tacts

Two training procedures were compared with respect to the average number of training trials it took to teach new verbal responses to normal children. Mand contingencies were alternated with tact contingencies in one condition while only tact contingencies were in effect in the other condition. Normal, preschool children served as subjects and toy parts were the objects that were to be named. The results indicated that it took, on the average, fewer trials to teach part names (tacts) in the mand-tact condition than in the tact only condition. Although more research is needed to confirm this, it appears that mand contingencies involve stronger controlling variables and can facilitate the acquisition of a tact repertoire.

     

Using Textual Prompts to Teach Mands for Information Using “Who?”

Recent research on teaching mands for information to children with language deficits has focused on manipulating establishing operations (EOs). However, only a few of those studies have programmed both EO conditions (in which information is needed) and abolishing operation (AO) conditions (in which information has already been provided) to ensure functional use of the mand for information. Shillingsburg, Bowen, Valentino, and Pierce (Journal of Applied Behavior Analysis, 47, 136–150, 2014) provided a successful demonstration of differential responding between EO and AO conditions demonstrating control of the response by the relevant EO. Echoic prompts resulted in successful mands for information “Who?” One limitation of this study was that the participants did not re-issue the initial mand upon approaching the named adult to retrieve the item. This may be problematic in the natural environment as it is unlikely that the named adult would know what the child was looking for. The current study sought to replicate and expand previous research by using textual prompts to teach the mand “Who?” in four children diagnosed with autism (Phase 1) and by requiring the mand for the item be re-issued upon approaching the named adult (Phase 2). Textual prompts resulted in differential use of the mand for information during EO and AO conditions for all of the participants. Additionally, three of the four participants who did not re-issue the mand to the named adult during the Phase 2 baseline did so following the intervention. Overall, results support the use of textual prompts to teach mands for information to children with autism.

     

The acquisition of tacts,mands, and intraverbals by individuals with traumatic brain injury

Two individuals who sustained traumatic brain injuries from motorcycle accidents were taught several verbal responses by using tact, mand, and intraverbal training procedures. The rate of acquisition for each operant and the transfer to untrained verbal operants involving the same response topography were measured. The results showed that tacts and intraverbals were acquired quickest, and training on the tact produced the greatest amount of transfer to the untrained verbal operants. Intraverbal training also resulted in transfer for both subjects, but to varying degrees. Direct mand training proved to be the least efficient way to generate a mand repertoire, and when acquired showed least amount of transfer to the untrained operants. These results seem to be in contrast with the findings of similar research with developmentally disabled individuals, and may have implications for methods of language instruction for the brain injured population.

     

Evaluation of Verbal Behavior in Older Adults

Approximately 5% of older adults have a dementia diagnosis, and language deterioration is commonly associated with this disorder (Kempler, 2005). Several instruments have been developed to diagnose dementia and assess language capabilities of elderly adults. However, none of these instruments take a functional approach to language assessment as described by Skinner (1957). The purpose of this study was to develop and evaluate a function-based assessment for language deficits of older adults. Thirty-one participants were categorized into a control group (n  =  15) and a dementia group (n  =  16) based on their score on the Dementia Rating Scale-2. Individuals with dementia performed significantly worse on the tact assessment than those without dementia. Participants from both groups performed better on measures of tacts than intraverbals or mands, even though topographically identical responses were required in these assessments. The data provide support for Skinner''s conceptualization of functionally independent verbal operants.     

Evaluating Stimulus-Stimulus Pairing and Direct Reinforcement in the Establishment of an Echoic Repertoire of Children Diagnosed with Autism

Many children with autism do not imitate adult vocalizations, an important skill in learning to talk. Pairing adult vocalizations with preferred stimuli has been shown to increase free-operant vocalizations but effects are temporary; thus, direct reinforcement may be necessary to establish durable vocal behaviors. In Experiment 1, directly reinforced echoic responses did not increase following stimulus-stimulus pairings in three children with autism. Similarly, pairings did not increase free-operant vocalizations in Experiment 2, a replication of Miguel et al. (2002). Experiment 3 demonstrated that shaping increased vowel frequency for one participant. Results suggest that variables are yet to be delineated that influence effectiveness of a stimulus-stimulus pairing procedure on vocalization frequency and acquisition of a verbal operant following such pairings.     

Effects of a Differential Observing Response on Intraverbal Performance of Preschool Children: A Preliminary Investigation

Axe (2008) speculated that some instances of intraverbal responding might be associated with limited or delayed acquisition because they require discrimination of multiple components of verbal stimuli. Past studies suggest that acquisition of responses under control of complex, multicomponent antecedent stimuli (e.g., conditional or compound stimulus control) can be facilitated with the introduction of a differential observing response (DOR; Dube & McIlvane, 1999; Gutowski, Geren, Stromer, & Mackay, 1995). The purpose of the current study was to evaluate the effects of a DOR (i.e., repeating the question) on intraverbal responding with six neurotypical preschool children. Findings included that (a) accuracy of intraverbal performance increased when the experimenter prompted a DOR; (b) 1 of 6 participants overtly emitted the DOR for a second relation in the absence of prompts, which was correlated with increased accuracy; and (c) following mastery, response accuracy was variable for 3 participants. Based on these findings, prompted DORs may offer an effective, if temporary, aid to intraverbal instruction for neurotypical preschool children.     

Stimulus-Stimulus Pairing of Vocalizations: A Systematic Replication

The current study replicated an enhanced stimulus-stimulus pairing (SSP) procedure used by Esch et al. (Journal of Applied Behavior Analysis 42: 42–225, 2009) for increasing vocalizations in children with autism. The enhanced SSP procedure consisted of pairing target vocalizations with high-preference items, interspersed target and nontarget trials, an observing response, and the presentation of the vocalizations in “motherese” speech. Results showed substantial increases in target vocalizations above baseline levels and above nontarget vocalizations for two of three participants.     

Separate But Not Alone: Separation-Individuation Issues in College Students with Eating Disorders

It sometimes seems that the college experience is tailor-made for the development of eating disorders. Overwhelmed and bombarded by their feelings, college students often turn to behavioral means, like eating disorders, to cope. Contemporary research (e.g., Christenson et al., 1994) has shown that good and bad emotions alike can be managed by starvation, bingeing, overeating, purging, and/or obsessive exercise. For college students, many of the overwhelming feelings that are titrated by eating disorders are directly linked to the separation process. Adolescence has been called a second individuation. While Mahler et al. (1975) viewed separation-individuation as both a developmental stage and a lifetime's work, contemporary therapists often concentrate on the importance of early separation experiences. A postmodern perspective, however, recognizes the importance of connection as well as separation. Our culture is so focused on independence that many parents of college students do not recognize the importance of maintaining active contact with their older adolescents. It can be very helpful to view an eating disorder as representing a college student's attempt to negotiate separation and connection, dependence and autonomy. This article examines some of these dynamics and the implications for therapy with this population.     

The Effects of Contingent Caregiver Imitation of Infant Vocalizations: a Comparison of Multiple Caregivers

The present study replicated and extended the Pelaez et al. (Journal of Applied Behavior Analysis 44:33–40, 2011) study, which examined the reinforcing effects of mothers’ contingent imitation of their infants’ vocalizations. Three infants aged 7–12 months who could vocalize sounds but not words participated with two caregivers for each infant (i.e., triads). During the intervention phase, the caregivers were asked to immediately imitate all vocalizations emitted by the child for a 3-min period. During the yoked control phase, the caregivers listened to an audio recording from the preceding condition and provided vocalizations non-contingently on the infants’ responses. The procedures yielded different results across participants; one infant emitted a higher frequency of vocalizations during the contingent imitation phases over the control phases, and the other two infants showed higher rates of responding during the control phases. However, all infants emitted more imitative return vocalizations during contingent reinforcement conditions compared with the yoked control condition.     

The Effects of Auditory Tact and Auditory Imagining Instructions on the Emergence of Novel Intraverbals

The current research investigated whether intraverbals would emerge following auditory tact instruction. Participants were first taught to tact auditory stimuli by providing the name of the item or animal that produces the sound (e.g., saying “eagle” when presented with the recording of an eagle cawing). Following test probes for simple intraverbals as well as intraverbal categorization participants were taught to tact what each auditory stimulus is (e.g., saying “caw” when presented with the recording of an eagle cawing). Following both tact instructional phases, the effects of an auditory imagining instruction procedure on target intraverbals were examined. Results indicate that following both tact instructional phases, intraverbals increased for three of four participants. Auditory imagining instruction was sufficient for two of four participants to reach mastery criterion, and two of four participants needed some direct instruction. Low covariation between simple intraverbal and categorization was also observed. Functional interdependence between tacts and intraverbals and the possible role of a conditioned hearing response are discussed.     

Echoic and Self-Echoic Responses in Children

Eleven typically developing children were assessed on the accuracy of prompted self-echoic responses following a 5-s delay from their initial echoic response, replicating procedures in Esch, Esch, McCart, and Petursdottir (2010) that compared discrepancies between echoic and self-echoic scores of autistic and typically developing children following a 2-s delay. We compared the two studies in terms of age, level tested, and echoic/self-echoic discrepancy scores. Age and test level differences were found to be statistically significant. Results are discussed in terms of discrepant self-echoic performance and self-echoic rehearsal as it relates to participant age, test level, motivating variables, and the development of complex behavior.     

An Underdiscussed Aspect of Chomsky (1959)

Chomsky''s (1959) review of Skinner''s (1957) Verbal Behavior has been influential and attributed with a role in the cognitive revolution. However, while counter reviews from within behavior analysis have noted that Chomsky misunderstood the subject matter, certain aspects of his scholarship have been underdiscussed. This includes several instances where Chomsky misquotes Skinner or takes his quotes out of context. Similar to the findings of Sokal (1996a, 1996b), it is speculated that the problems with Chomsky were overlooked by cognitive psychologists because his general outlook was accepted. Implications for the editorial review process are discussed.

Transgressing disciplinary boundaries . . . [is] a subversive undertaking since it is likely to violate the sanctuaries of accepted ways of perceiving. Among the most fortified boundaries have been those between the natural sciences and the humanities.—Greenberg (1990, p. 1), as quoted in Sokal (1996a)Every man has a right to his opinion, but no man has a right to be wrong in his facts.—attributed to Bernhard Mannes Baruch (Montapert, 1964, p. 145)

Areas of study are sometimes profoundly affected by people outside them. For example, the linguist Noam Chomsky is familiar to many psychologists for his influence in the cognitive revolution, the major shift in the orientation of American psychology from behavioral to cognitive in the 1960s and 1970s (e.g., Auyang, 2000, p. 105; Erneling, 1997; Hunt, 1982, p. 217; Kosslyn & Rosenberg, 2001, p. 238). Some have even suggested that Chomsky''s (1959) review of B. F. Skinner''s (1957) Verbal Behavior, the latter''s theoretical account of how language can be explained in behavioral terms, was responsible for initiating the cognitive revolution (e.g., Bialystock, 1997; Harnish, 2002, p. 44).When Chomsky set out to write his review, he faced a daunting task. While apparently well read in certain areas such as political theory, there is little to indicate he had any previous exposure to psychology except for psychoanalysis (Barsky, 1997) and through linguists who have drawn upon psychology, such as Bloomfield (1933). Psychology in general in the early and mid-20th century was broad and diverse (e.g., Heidbreder, 1933; Hilgard & Bower, 1966), and so too was behavioral psychology. At that time “behaviorism” was used to refer a variety of behavior-oriented work, such as the strict methodological behaviorism of John B. Watson (e.g., Watson, 1913, 1924), the mathematical modeling with intervening variables of Clark L. Hull''s school (e.g., Hull, 1943, 1951, 1952), and the eclectic, molar, purposive behaviorism of Edward C. Tolman (e.g., Tolman, 1922, 1932, 1948), each with its own assumptions and terminologies. Skinner''s approach, radical behaviorism, differed from all of them in that he recognized the fundamental respondent-operant distinction (Skinner, 1935, 1937, 1938, p. 61ff., 1953, pp. 45–90), accepted the reality of private events, and rejected purely hypothetical mental constructs (Skinner, 1945). Verbal Behavior was very specifically based on Skinner''s approach, and any reviewer would have to understand this to do the job properly.Behavior analysts’ responses to Chomsky''s (1959) review of Verbal Behavior have not been positive (e.g., MacCorquodale, 1970; McLeish & Martin, 1975; Richelle, 1976); their counter reviews generally have noted that Chomsky fundamentally misunderstood the subject matter and emphasized major points where he differed from Skinner. The existing counter reviews, however, do not exhaust the problems with Chomsky. An especially important yet underdiscussed problem of Chomsky is the poor quality of his scholarship, which, to this author''s best knowledge, has not been previously addressed. The purpose of this paper is to address this issue and discuss its implications for future literature reviews.

Chomsky''s Review of Skinner

As noted above, Chomsky''s apparent understanding of radical behaviorism was poor, and at numerous points he makes claims not supported by the existing literature. Some parts of his review, such as citing a supporting claim that stimuli cannot be manipulated (Chomsky, 1959, p. 31, footnote 5) demonstrate severe problems with his understanding of the subject matter, and his handling of the most basic terms was so poor that Richelle (1976) said his “misunderstanding . . . would prompt most examination graders to read no further.”Many serious problems in this area have already been discussed by the above-mentioned counter reviewers; these include instances where Chomsky misattributed views to Skinner that clearly belong to others. For example, Chomsky (1959, p. 28) in describing response strength claimed: “The strength of an operant is defined by Skinner in terms of the rate of response during extinction. . . .” Skinner never claimed this, but rather defined it as the probability a response will occur under certain circumstances (Skinner, 1957, p. 22). MacCorquodale (1970) noted that rate of response during extinction was actually Hull''s definition of probability (Hull, 1943, pp. 260–262), and claiming that Skinner accepted this definition given his criticism of Hull''s work (Skinner, 1944) would be difficult to justify. Several other of Chomsky''s errors may have resulted from his failing to distinguish Skinner''s views from those of others. For example, Chomsky claimed that Skinner said “that children can learn language only through ‘meticulous care’ on the part of adults who shape their verbal repertoire through careful differential reinforcement” (Chomsky, p. 42) and that it is part of “the doctrine of Skinner and others that slow and careful shaping of verbal behavior through differential reinforcement is an absolute necessity” (op. cit., p. 42). Aside from the fact that other people''s doctrines are irrelevant here, nowhere does Skinner make this claim. Chomsky may have actually been reacting to Miller and Dollard (1941, p. 82), who in a discussion on language acquisition wrote: “The child is given meticulous training in connecting words to objects and connecting acts to words.” Skinner (1957), however, says almost nothing about language acquisition and certainly did not describe it as arising from a laborious and intentional shaping procedure. Chomsky (pp. 35, 52), perhaps supposing all responses would act like respondents, also wrongly indicated that a “strong” (operant) verbal response should, according to Skinner, necessarily be a high-pitched scream. However, as Skinner (1950, p. 196) noted,

In the sort of behavior adapted to the Pavlovian experiment (respondent behavior) there may be a progressive increase in the magnitude of response during learning. But we do not shout our responses louder and louder as we learn verbal material, nor does a rat press a lever harder and harder as conditioning proceeds. In operant behavior the energy or magnitude of response changes significantly only when some arbitrary value is differentially reinforced—when such a change is what is learned.

Not all of Chomsky''s errors involved confounding views or pure misunderstandings. There are several instances in Chomsky (1959) where Skinner is quoted out of context or the quote is incorrect such that Skinner''s views are not accurately portrayed. A few examples follow.

1. The above-mentioned false definition of response strength was again made when Chomsky (1959, p. 34) claimed that “Skinner has argued that this [rate of emission during extinction] is ‘the only datum that varies significantly and in the expected direction under conditions which are relevant to the “learning process.” The actual quote from Skinner (1950, p. 198) began with “Rate of responding appears to be the only datum which [sic] varies significantly. . . .” Extinction was not mentioned at all. Furthermore, this occurred in a discussion of learning theories, far removed from anything Chomsky discussed.
2. Chomsky (1959, p. 34) claimed that Skinner said that “the frequency of the response may be ‘primarily attributable to the frequency of occurrence of controlling variables’ . . . .” The actual sentence in Skinner (1957, p. 27) was “Nor can we be sure that frequency is not primarily attributable to the frequency of occurrence of controlling variables.” This occurred in a discussion of factors affecting frequency, during which Skinner emphasized that, contrary to the practice of “word counts” used in formal analyses of language, “it is also important to know the prevailing conditions,” that is, the circumstances under which they occur. Skinner was expressing a possibility or an uncertainty, which Chomsky failed to acknowledge.
3. Chomsky (1959, p. 34, footnote 9) quoted from Skinner (1950, p. 199) regarding allegedly using “the notion of probability in analyzing or formulating instances of even types of behavior which are not susceptible to this analysis.” Chomsky used this quote in a discussion in which he attacked Skinner''s usage of probability (and failed; see MacCorquodale, 1970). However, the passage from Skinner occurred at the end of a paragraph discussing complex activities that, as a whole, may never be repeated by the individual. In the same paragraph, Skinner (p. 199) said,

They are not simple unitary events lending themselves to prediction as such. If we are to predict marriage, success, accident, and so on, in anything more than statistical terms, we must deal with the smaller units of behavior which lead to and compose these unitary episodes. If the units appear in repeatable form, the present analysis may be applied.

Chomsky, however, attempted to apply this analysis to language behaviors, which typically involve a large number of units that may occur very frequently; thus the limitations that may apply to predicting marriage, success, accident, and so on as wholes are irrelevant to Skinner''s program. Chomsky acknowledged none of this.4. Chomsky (1959, p. 35, footnote 10), in discussing pitch, quoted Skinner as saying “Fortunately, ‘In English this presents no great difficulty’ since, for example, ‘relative pitch levels . . . are not . . . important,’” the “this” apparently referring to that pitch, among things, has linguistic functions (pp. 34–35). He further indicated (op. cit.): “No reference is made to the numerous studies of the function of relative pitch levels and other intonational features in English.” The implication is that Skinner ignored the importance of pitch and intonation in actual speech. But what Skinner (1957, p. 25) actually wrote was:

In English, this [energy level, speed of response, and even repetition entering into the construction of different forms of response] presents no great difficulty. Absolute levels of pitch and intensity are not “distinctive,” nor are relative pitch levels important. Changes in pitch, however, distinguish different types of utterance.

Skinner then discussed the functions of pitch in English. While Skinner and Chomsky may have disagreed about their exact functions, it is clear that Skinner did not contend that intonation or pitch in English were completely “unimportant” as Chomsky implied.5. Chomsky (1959, p. 52, footnote 42) quipped, “Similarly, ‘the universality of a literary work refers to the number of potential readers inclined to say the same thing’ (. . . i.e., the most ‘universal’ work is a dictionary of clichés and greetings).” However, the paragraph in Skinner (1957, pp. 274–275) this quote was taken from begins:

A reader seeks out other works of a given writer or other literature of a given type because of the reinforcement he has received. The reinforcement depends upon his own verbal behavior. A thematic correspondence between a reader and a literary work is likely to involve a matching of variables in the fields of motivation and emotion. The universality of a literary work refers to the number of potential readers inclined to say the same thing, at least in some measure. The success of a book is some indication of the number of people who possess a given kind of verbal behavior in strength.

In other words, a work has “universality” when readers would be likely to say something similar in content to the work, not specific utterances.6. Chomsky (1959, p. 53) claimed that “Skinner considers a sentence to be a set of key responses (nouns, verbs, adjectives) on a skeletal frame” and then proceeded to criticize Skinner as if this was his position. However, the actual quote was: “Others [other sentences] are nearly complete skeletal ‘frames’ upon which an exceptional response or two may be hung” (Skinner, 1957, p. 346), and this was not presented as the sole possibility. Rather, it was part of a much longer chapter (pp. 344–367) in which Skinner discussed how verbal responses are combined. Much of this involves a class of responses called autoclitics (p. 311ff.), which are verbal operants whose occurrence depends in part on the occurrence of other verbal operants; in Skinner''s hypothesis, grammar results from an interaction of autoclitics with other verbal operants. For example, when one is confronted by the appropriate stimulating conditions (seeing a hungry man) one would not only emit such responses as hungry and man, but also autoclitics related to the specificity of the situation (the) and occurrence (is) to produce a longer, structured utterance (The man is hungry; Skinner, p. 345). Not all sentences are necessarily created this way, and in the quote Chomsky cites, Skinner does indicate some may be partially or completely preformed; however, he certainly did not claim all were.     

Does the Brain’s Reward Response Occur Even Without Actual Reward? A Response to Fielding et al. (2017)

A recent paper by Fielding et al. (J Gamb Stud, 2017) argued that the brain’s reward response could occur without the presentation of actual reward. We suggest that since (a) the event-related potentials reported in this paper are atypical of the previous literature, and, (b) a simpler account of the data in terms of sensitivity to outcome frequency cannot be ruled out, the extent to which the brain’s reward response can occur without the presentation of actual reward should remain an open question.