Abstracting Sequences: Reasoning That Is a Key to Academic Achievement

The ability to understand sequences of items may be an important cognitive ability. To test this proposition, 8 first-grade children from each of 36 classes were randomly assigned to four conditions. Some were taught sequences that represented increasing or decreasing values, or were symmetrical, or were rotations of an object through 6 or 8 positions. Control children received equal numbers of sessions on mathematics, reading, or social studies. Instruction was conducted three times weekly in 15-min sessions for seven months. In May, the children taught sequences applied their understanding to novel sequences, and scored as well or better on three standardized reading tests as the control children. They outscored all children on tests of mathematics concepts, and scored better than control children on some mathematics scales. These findings indicate that developing an understanding of sequences is a form of abstraction, probably involving fluid reasoning, that provides a foundation for academic achievement in early education.     

5-HTTLPR X Stress in Adolescent Depression: Moderation by MAOA and Gender

Depression surges in adolescence, especially among girls. Most evidence indicates that the short allele of a polymorphism in the promoter region of the serotonin transporter gene (5-HTTLPR) interacts with stress to influence the onset of depression. This effect appears to be less robust in adolescents, particularly among boys, and may be moderated by other genetic polymorphisms. Seeking to explain the adolescent gender difference in depression, this study examined the effects of 5-HTTLPR (rs25531), the monoamine oxidase A-upstream variable number tandem repeat (MAOA-uVNTR), and negative life events (NLE). A community-based longitudinal sample of 309 adolescents reported depressive symptoms and NLE at ages 11, 13, and 15. 5-HTTLPR and MAOA-uVNTR genotypes were ascertained via buccal swabs. A significant four-way interaction of 5-HTTLPR, MAOA-uVNTR, NLE at age 13, and gender predicted depressive symptoms at age 15. Girls were most likely to exhibit elevated depressive symptoms when experiencing NLE if they possessed low-expression MAOA-uVNTR alleles and short 5-HTTLPR alleles, whereas low-expression MAOA-uVNTR alleles but long 5-HTTLPR alleles were implicated in boys. The results indicate that the commonly reported 5-HTTLPR by stress interaction for depression may be limited to individuals with low-expression MAOA-uVNTR alleles. These data also provide new evidence that the short allele of 5-HTTLPR confers susceptibility to stress differently for females compared with males.     

Observational Learning in Pigeons: The effects of Model Proficiency on Observer Performance

Observational learning of a successive visual discrimination problem by pigeons was studied using conspecifics as models performing at proficient or at nonproficient levels. During the observational period, observers were confined without response opportunity and were subsequently trained in the model's discriminative task. Significantly better performance in subsequent learning was found for observers of nonproficient models. In contrast, no significant differences in learning of the visual discrimination task were found between pigeons that observed proficient models and pigeons that had undergone only confinement in the observation apparatus or those trained without prior observation or confinement experience. The apparent paradox of less proficient models producing better learners may be related to the consequences of observing additional negative-stimulus responding per se or to observation of models' behavior changing from less proficient to more proficient with consequent improvement in reinforcement opportunity.     

Reexamining the link between parental knowledge and delinquency: unpacking the influence of adolescents’ and their parents’ perceptions

ABSTRACT

Parents’ and their children’s perceptions of how much parents know about the child’s activities outside parental presence (parental knowledge) are important for understanding delinquency. Yet, conceptual and methodological deficiencies in prior research may limit this understanding. Reexamining how these perceptions affect delinquency, we find that contrary to conventional wisdom: (1) adolescent and parent perceptions of parental knowledge impact delinquency jointly rather than independently and (2) the protective effect of adolescent perceptions weakens as parent perceptions increase. Specifically, when parental perceptions are strongest, the delinquency inhibiting effect of adolescent perceptions is offset, which may result from stress of parents’ monitoring efforts.     

Virtual Deviance: Swinging and Swapping in an On-Line Network

The purpose of the current research is to study the virtual presentation of self in on-line profiles, specifically within a deviant subculture. The study explores the social construction of deviant identities using the on-line community of “swingers.” Our research explored what self-presentation strategies are employed by participants in their profiles to develop credibility to attract others to their profiles and what major concerns, expectations, and values characterize the profiles of the on-line swinger community. Most on-line profiles focus on developing credibility. We used Aristotle's notions of goodwill, practical intelligence, and virtue to categorize the specific means used in profiles to develop credibility.     

The Interpersonal Model of Health Anxiety: Testing predicted paths and model specificity

Health anxiety involves persistent worry about one’s health and is characterized by dysfunctional interpersonal processes such as excessive health-related reassurance-seeking and feelings of alienation from others. Cognitive-behavioral models largely ignore cyclical, interpersonally averse behaviors and social cognitions observed amongst health anxious individuals. The Interpersonal Model of Health Anxiety (IMHA) proposes health anxiety is maintained through activated anxious attachment insecurities, which drive frequent, but ineffective, health-related reassurance-seeking from others. Such excessive health-related reassurance-seeking leads to health-related alienation and beliefs others are unconcerned about one’s perceived health problems. Feeling alienated from others fuels further health-related worry, resulting in continued self-defeating attempts at health-related reassurance-seeking. The present study offers the first comprehensive articulation and test of the IMHA. Using a cross-sectional design and 107 undergraduates, path analysis supported five of six hypothesized paths in the model; all paths except that from anxious attachment to health-related reassurance-seeking were significant and in the expected direction. Specificity tests suggested anxious attachment was more central than avoidant attachment to the IMHA. The present test of the IMHA as a single, coherent model provides a conceptual foundation for future research on interpersonal processes in health anxiety. Clinical implications are discussed.     

The Effect of Target Status on Witnesses' Reactions to Confrontations of Bias

HIV-related stigmatization remains prevalent and harmful to HIV+ individuals. Guided by a dual process model of HIV-related stigma, this study examined the psychological factors governing stigmatizing responses and response adjustments toward HIV+ persons. Hypotheses were tested using a computerized stigma measure that simulated approach/avoidance behavior toward an HIV+ target. Findings indicated that initial reactions to the HIV+ target were predominately negative and associated with endorsement of homophobia. Conversely, subsequent response adjustments reflected greater acceptance of the HIV+ target and were associated with internal motivations to control prejudice. Findings confirm the need for innovative stigma reduction strategies.     

When Sociopolitical Events Strike Cultural Beliefs: Divergent Impact of Hurricane Katrina on African Americans' and European Americans' Endorsement of the Protestant Work Ethic

Three experiments address how people react to a sexual abuse victim compared to a nonvictim when a justification for negative evaluation is available or not available. A harm-doing victim was rated lower on expected job performance and higher on desired social distance than a harm-doing nonvictim. When subsequent harm-doing was absent, judgments of a victim and nonvictim did not differ on expected job performance or social distance. Experiment 2 replicated the results of Experiment 1 and revealed that the order in which victimization history and harm-doing information were presented had no effect. Experiment 3 showed that participants desired greater social distance from a harm-doing victim compared to a non-harm-doing victim to the extent they thought the target should have derived benefits from the childhood victimization. Implications for judgments of harm-doers—depending on whether their victimization history is known or not—are considered.     

Do gains in working memory capacity explain the written self-disclosure effect?

Klein and Boals (2001) concluded that expressive writing about negative life events improves health by reducing intrusive thoughts, as measured by the Impact of Events Scale (IES), and thus freeing working memory (WM) capacity. We replicated their WM gain and rejected the possibility that it reflected task practice alone. We extended their work by showing that such WM effects and reductions in self-reported health symptoms can be observed within a short time frame of a week in a normal population of college students and can occur without reductions in IES scores. Two alternative explanations are discussed of how WM gains can be observed in the written self-disclosure effect without reductions in the frequency of intrusive thoughts and avoidance attempts.     

Semantic processing in auditory lexical decision: Ear-of-presentation and sex differences

In this study we examined the interplay between appetitive (approach) and defensive (avoid) responses in spoken word recognition. Ninety-two right-handed participants (half women) took part in an auditory lexical decision experiment in which speech was presented to only one ear. The danger and usefulness of the word referents interacted in predicting RTs, as in previous (binaural) studies with poorer control of psycholinguistic covariates. Specifically, higher danger ratings were associated with faster RTs for words rated low on usefulness; but higher danger ratings were associated with slower RTs for words rated high on usefulness. In addition to this primary finding, men showed more lateralised performance, as indicated by significant interactions of sex and ear of presentation with word frequency, and with the animacy of the word referents. For both sexes, word frequency had a stronger effect on accuracy for speech presented to the right ear. Finally, men's but not women's RTs were related to the danger dimension. This last finding provides an intriguing avenue for future research in the area of sex differences and emotion.