Operator behavior in a dynamic visual signal detection task

The effects of changes in signal-to-noise ratio (SIN) and feedback state on the operator’s detection behavior, particularly derived operator thresholds, were investigated using a discrete visual signal. It was found that: (1) the operator behaves as if he has established different thresholds as a function of S/N; (2) his decision thresholds are relatively independent of the presence or absence of feedback; and (3) the operator will change his threshold accordingly for a change from one S/N to another. A model of the operator’s behavior, which introduced the concept of “operator” noise. yielded predictions of detection and false alarm probabilities which were extremely close to the observed values.     

The development of language in genie: a case of language acquisition beyond the “critical period”

The present paper reports on a case of a now-16-year-old girl who for most of her life suffered an extreme degree of social isolation and experiential deprivation. It summarizes her language acquisition which is occurring past the hypothesized “critical period” and the implications of this language development as related to hemispheric maturation and the development of lateralization. The results of a series of dichotic listening tests administered to her are included.     

Misalignment and Misperception in Preferences to Utilize Family‐Friendly Benefits: Implications for Benefit Utilization and Work–Family Conflict

Despite their increasing popularity, family‐friendly benefits are frequently underutilized. Drawing on literatures concerning social norms and pluralistic ignorance, this study examines the role of personal preference, group norm misalignment, and misperception of group norms on employees’ utilization of family‐friendly benefits. In 2 samples (154 firefighters and 440 nurses) across 3 data collection periods, we found that when employees’ preferences for benefit utilization were misaligned with the perceived group norm, they adjusted their family‐friendly benefit utilization in a manner congruent with the norm, even when that norm was misperceived. Further, we found that family‐friendly benefit utilization was negatively associated with work–family conflict. Together, our findings suggest that misperceived social norms regarding family‐friendly benefit utilization can lead to situations whereby employees do not utilize family‐friendly benefits because they mistakenly perceive utilization is not socially accepted and, as a result, experience higher work–family conflict.     

The sweetness of surrender: Glucose enhances self-control by signaling environmental richness

According to the ego-depletion account of loss of self-control, self-control is, or depends on, a depletable resource. Advocates of this account have argued that what is depleted is actually glucose. However, there is experimental evidence that indicates that glucose replenishment is not necessary for regaining self-control, as well as theoretical reasons for thinking that it is not depleted by exercises of self-control. I suggest that glucose restores self-control not because it is a resource on which it relies, but because it serves as a signal of environment quality. I suggest that the evidence is better explained by a rival opportunity costs model of self-control than by the ego-depletion account.     

Shlomit Levy: a Pioneer in the Structural Theory of Well-Being

Applied Research in Quality of Life -     

Social cognitive predictors of prosocial behavior toward same and alternate race children among white pre-schoolers

Social cognitive predictors of 36 White preschoolers' (18 boys, 18 girls) tendencies to say they would act prosocially toward White and African-American children were examined. White preschoolers completed measures of their tendency to engage in prosocial behaviors directed toward White and African-American children, positive racial beliefs about White and African-American persons, and race schematicity. Consistent with previous research examining prosocial behavior in preschoolers, girls were more likely than boys to say they would act prosocially. White preschoolers' age in months did not correlate significantly with their tendencies to engage in prosocial behaviors toward White children. However, age in months was negatively correlated with White preschoolers' inclinations to direct prosocial behaviors toward African-American children. Consistent with an emerging literature concerning the role of social cognitive factors in young children's race schema development, White preschoolers' race schematicity was significantly predictive of their tendencies to say they would engage in prosocial behaviors toward African-American children. Patterns of results partially replicate previous prosocial behavior research, and demonstrate the importance of social cognitive variables on young children's prosocial behaviors. This research was undertaken as part of a graduate program in psychology at the University of Wyoming by the first author under the direction of the second author. The authors express gratitude to Karen Bartsch, Ph.D., and Bernita Quoss, Ph.D., and Jesse Barber, Sylvia Jones, and Nicole Martin of the University of Wyoming and to Nancy Eisenberg, Ph.D., of Arizona State University.     

The prematurity stereotype revisited: Impact on mothers' interactions with premature and full‐term infants

Research exploring the effects of labeling on maternal perceptions and behaviors was extended by simultaneously examining the cognitive and behavioral effects of prematurity stereotyping with both mothers of full‐term and premature infants, and by examining the effects of an information‐based intervention on the stereotyped responses of mothers of premature infants. An experimental design wherein mothers of both full‐term and premature infants were randomly assigned to interact with, and then rate, either a full‐term or premature infant who was described as either full‐term or premature was employed to test several hypotheses. Two hypotheses related to prematurity stereotyping received support: mothers showed more positive responses to infants labeled full‐term than to infants labeled premature, and mothers of full‐term infants exhibited more prematurity stereotyping than did mothers of premature infants. The hypothesis concerning gender effects also was supported, with mothers showing more positive responses to male infants than to female infants. In contrast to expectations, a brief cognitive intervention provided to some mothers of premature infants failed to reduce stereotyping, and, indeed, appeared to increase stereotyping. These results are compared with the results of previous studies, most of which did not include actual interactions between mothers and infants, and the implications of these results are considered. © 2000 Michigan Association for Infant Mental Health.