Continuous population estimates forDendroctonus frontalis Zimm. (Coleoptera: Scolytidae) occurring in infestations

Summary Infestations ofDendroctonus frontalis Zimm. are often observed to enlarge continuously by the colonization of new hosts in a pattern similar to a forest fire. This pattern of infestation growth presents unique problems in quantitatively estimating populations ofD. frontalis. Beetle populations on each infested tree in an infestation go through five processes: attack, oviposition, reemergence, survivorship, and emergence. These processes, which have been described mathematically in the literature, each take several days for completion. In order to follow the distribution and abundance ofD. frontalis throughout the course of development of a spot, we need a daily estimate of the number of beetles involved in each process on every tree. Since it is not practical to sample each tree daily, we developed a procedure whereby quantitative estimation procedures for within-tree populations were used in combination with the mathematical models for the life processes to produce a daily record of the number of adults successfully attacking trees, the number of eggs oviposited, the number of beetles reemerging, number of beetles surviving within the trees, and the number of beetles emerging. These daily estimates were then summarized for all trees in the spot for the duration of the infestation. The daily record of populations ofD. frontalis, used with information on infestation geometry, were suggested to be of value in describing and elucidating several important facets of population dynamics including dispersal patterns within infestations, between tree beetle loss (mortality), and time lags among the various population processes. The information reported can be used to develop simulation models of population dynamics or to validate existing models. Texas Agric. Experiment Stn. TA No. 14689.     

How Women in Late Midlife Become Caregivers for Their Aging Parents

Approximately 52 million Americans provide informal (unpaid) care to a family member or friend who is disabled or ill. The most common informal caregiving relationship is that of an adult child providing assistance to an aging parent. This article describes a qualitative study examining how adult daughters between the ages of 50 and 65 become caregivers to their parent or parent-in-law. Data were collected through in-depth, face-to-face interviews with 15 female caregivers. Analysis revealed that assistance provided to parents was initiated by one or more triggering event, after which participants became caregivers in either an emergent or deliberate manner.     

Timing contradictions in von Neumann and Morgenstern's axioms and in savage's ‘sure-thing’ proof

At the point of choice, let N be the delay in learning the outcome. Then von Neumann and Morgenstern's postulates contradictorily imply that N = 0 and N > 0. As a consequence, Savage's sure-thing proof, which has bestowed on expected utility theory most of its normative appeal, depends on inconsistent assumptions. Further, the validity of Savage's proof cannot be retrieved by minimizing N > 0, by making the delay a mere moment or so. The historical origins of these contradictions are traced to (i) von Neumann and Morgenstern inadvertently limiting their risk model to the certain period, that is the period after gamblers learn the outcome(s), and (ii) Savage's use of the sure-thing principle for analysing atemporally but also quite formally compound gambles [Savage, 1954, p. 23].     

Academic Underachievement and Recovery: Student Perspectives on Effective Career Interventions

Academic achievement has a significant influence on various career development and decision‐making factors. Therefore, it is important for career counselors to understand how past academic underachievement affects students’ current lives and to develop interventions that might ameliorate negative effects. This study examined the experiences of 9 ethnically diverse college students who had experienced and overcome academic failure. Data were collected by individual interviews and analyzed based on the consensual qualitative research method. Four themes emerged in relation to participants’ academic underachievement and recovery: attitude, study strategies, external support, and coping difficulties. The results suggest that underachieving students are better able to cope with and overcome academic difficulties when they set clear career goals, use effective learning strategies, consciously put forth more effort, and receive external support.     

Psychometric Properties of the Lesbian,Gay, and Bisexual Identity Scale–Turkish (LGBIS-TR)

The aim of the current study was to examine the psychometric properties of the Lesbian, Gay, and Bisexual Identity Scale (LGBIS; Mohr & Kendra, 2011) in a Turkish sample. Three hundred and ten LGB individuals participated and completed the Turkish version of the LGBIS (LGBIS-TR) along with the Satisfaction with Life, Positive and Negative Affect, and Self-Compassion Scales. Confirmatory factor analysis results yielded a good-fit for eight subscales of the LGBIS-TR. We also obtained satisfactory criterion validity and internal consistency reliability. Based on this initial study, the LGBIS-TR appears to be a psychometrically sound instrument to gauge LGB individuals’ identity experiences in Turkey. We discuss the results along with previous findings and limitations of the study, and we provide implications for further research and practice.     

A Brief History of Career Counseling in the United States

The author presents the 6 stages in the development of career counseling in the United States. In the 1st stage (1890–1919), placement services were offered for an increasingly urban and industrial society. In the 2nd stage (1920–1939), educational guidance through the elementary and secondary schools became the focal point. The 3rd stage (1940–1959) saw the focus shift to colleges and universities and the training of counselors. The 4th stage (1960–1979) was the boom for counseling and the idea of work having meaning in a person's life came to the forefront; organizational career development began during this period. The 5th stage (1980–1989) saw the beginning of the transition from the industrial age to the information age and the growth of both the independent practice of career counseling and outplacement counseling. The 6th stage (1990—present), with its emphasis on technology and changing demographics, has seen an increased sophistication in the uses of technology, the internationalization of career counseling, the beginnings of multicultural career counseling, and the focus on the school‐to‐job transition.