Binary 2 × 2 games

The 2 × 2 game is the simplest interactive decision model that portrays concerned decision makers with genuine choices. There are two players, each of whom must choose one of two strategies, so that there are four possible outcomes. Binary 2 × 2 games are 2 × 2 games with no restrictions on the players' preference relations over the outcomes. They therefore generalize the strict ordinal 2 × 2 games and the ordinal 2 × 2 games, classes which have already been studied extensively. This paper enumerates the strategically distinct binary 2 × 2 games. It also identifies important subsets defined by the number of pure Nash equilibria and the occurrence of dominant strategies.     

Response of wild bee communities to beekeeping,urbanization, and flower availability

Urban Ecosystems - Wild bees provide pollination services and are currently declining at the global scale. A potential cause for this decline is competitive interactions with domestic honey bees....     

Stabilities of infant behaviors and maternal responses to them

Consistency in the order of individuals in a group across substantial lengths of time—stability—is a central concept in developmental science for several reasons. Stability underscores the meaningfulness of individual differences in psychological phenomena; stability informs about the origins, nature, and overall developmental course of psychological phenomena; stability signals individual status and so affects the environment, experience, and development; stability has both theoretical and clinical implications for individual functioning; and stability helps to establish that a measure constitutes a consequential individual‐differences metric. In this three‐wave prospective longitudinal study (Ns = 40 infants and mothers), we examined stabilities of individual variation in multiple infant behaviors and maternal responses to them across infant ages 10, 14, and 21 months. Medium to large effect size stabilities in infant behaviors and maternal responses emerged, but both betray substantial amounts of unshared variance. Documenting the ontogenetic trajectories of infant behaviors and maternal responses helps to elucidate the nature and structure of early human development.     

Comparative and Individual Perspectives on Mother–Infant Interactions with People and Objects among South Koreans,Korean Americans,and European Americans

Comparative and individual acculturation of mother and infant person‐directed and object‐directed behaviors and interactions were investigated among 183 South Korean, Korean American, and European American mothers and their 5½‐month‐old infants. We analyzed and compared mean levels in mothers’ and infants’ person‐ and object‐directed behaviors and partner responsiveness and initiation of these behaviors in dyads in the three cultural groups. Among Korean American dyads, we also analyzed individual‐level variation in the acculturation of these behaviors and interactions. This study reveals how contrasting South Korean and European American cultural values are embedded and manifested in early mother–infant interactions and how cultural values from South Korean origin and European American destination cultures are interwoven in Korean American mother–infant interactions.     

Hierarchical-block conditioning approximations for high-dimensional multivariate normal probabilities

Statistics and Computing - This paper presents a new method to estimate large-scale multivariate normal probabilities. The approach combines a hierarchical representation with processing of the...     

Fighting for survival: The experiences of lesbian,gay, bisexual,transgender, and questioning students in religious colleges and universities

ABSTRACT

Little is known about the experiences of lesbian, gay, bisexual, transgender, and questioning (LGBTQ) students attending religious colleges and universities. This study used grounded theory to analyze the narratives (N = 271) of LGBTQ former and current students. The central theme described by LGBTQ students was a fight for survival with five subthemes: (a) institutionalized homo/transphobia (strict school policies, enforcement of heterosexuality and gender conformity through discipline, conversion therapy); (b) a culture of fear (fear of exposure, homophobic panic and code words, seeking cover); (c) marginalization and isolation; (d) struggle (suffering and suicide, reconciling faith and LGBTQ identity); and (e) coping and resilience (surviving through critical thinking and strategic activism). Implications for practice are provided.     

Estimating cumulative prospect theory parameters from an international survey

We conduct a standardized survey on risk preferences in 53 countries worldwide and estimate cumulative prospect theory parameters from the data. The parameter estimates show that significant differences on the cross-country level are to some extent robust and related to economic and cultural differences. In particular, a closer look on probability weighting underlines gender differences, economic effects, and cultural impact on probability weighting. The data set is a useful starting point for future research that investigates the impact of risk preferences on the market level.     

Maternal Regulation of Daughters' Emotion During Conflicts From Early to Mid‐Adolescence

Primary caregivers play an important role in emotion socialization. Real‐time mother–daughter emotion socialization was examined in 45 mother–daughter dyads with early‐adolescent daughters (age M = 11.80, SD = .27) at the first observation point. Maternal supportive emotion regulation and daughters' emotions were coded during two conflict discussions, 2 years apart. With multilevel survival analysis, the likelihood of maternal supportiveness was predicted both over time, between early and mid‐adolescence, and by daughters' pubertal status. Mothers were more likely to respond to daughters' negative and positive emotions with supportiveness for daughters whose pubertal maturation occurred relatively early. Results suggest that mothers adjust their socialization of daughters' emotions according to their daughters' pubertal development.     

Psychosocial Profile of Children Having Participated in an Intervention Program for Their Sexual Behavior Problems: The Predictor Role of Maltreatment

This study sought to verify if a history of maltreatment may predict the psychosocial profile of children who participated in an intervention program aiming at reducing sexual behavior problems. Data were collected at both the beginning and the end of the intervention program using a clinical protocol and standardized tests selected on the basis of the intervention targets. In general, the results indicate that children who had experienced maltreatment display a psychosocial profile that is similar to that of children who had not experienced maltreatment. However, children who had experienced psychological abuse or neglect may display greater externalized or sexualized behaviors, whereas children who have a parent who had been a victim of sexual abuse may display fewer sexualized behaviors.