Prawn-in-a-tube procedure: habituation or associative learning in cuttlefish?

The prawn-in-a-tube procedure (J. B. Messenger, 1973a) has been used almost exclusively to study associative learning in cuttlefish. In two experiments, the authors sought to determine whether the decline in attack responses observed in this procedure was best accounted for by habituation or associative learning. Results of Experiment 1 revealed an asymmetrical stimulus-specificity effect that could be interpreted as either an instance of habituation or of associative learning. Results of Experiment 2 demonstrated that the response decline could not be reversed following the presentation of a dishabituatory stimulus. The combined results of these experiments support the conclusion that the response decline is best viewed as a resulting of associative processes. The authors considered whether the response decline represents extinction or passive avoidance.     

Editorial

This study examined the psychometric properties of the Outcome Questionnaire-30.2 (OQ-30.2; designed to measure patient progress throughout mental health treatment) in a sample of United States Air Force active duty basic military trainees who were evaluated for mental health concerns during the course of basic training. Findings indicate that the OQ-30.2 was internally consistent and Total scores decreased with more contact with mental health professionals. Previously reported 1- and 3-factor structures were not replicated; rather, results suggested the use of a broad 27-item general psychological distress subscale and a separate subscale of 3 critical items assessing substance use concerns. Present findings support the utility of the OQ-30.2 as a tool for repeated monitoring of patient progress in military mental health settings. Recommendations for future directions in the development of alternate calculations of the clinical cut score and reliable change index are discussed.     

Evaluating a Brief Scale Measuring Psychological Climate for Sexual Harassment

We evaluated the measurement properties of the psychological climate for sexual harassment (PCSH) questionnaire with data from women officers (n?=?311) in the Swedish Armed Forces. Confirmatory factor analyses indicated that a two-factor solution assessing risks and seriousness/actions associated with sexual harassment episodes described the underlying pattern of correlations among items. Correlational and regression analyses showed that ratings of perceived intolerance for sexual harassment were associated with high ratings of job satisfaction, organizational commitment, and (positive) mental health; and decreased ratings of psychological distress. We discuss the theoretical, methodological, and practical implications of our findings for future research.     

employment or economic success: the experience of individuals with disabilities in transition from school to work

This research explores the mediating effects of severity of disability on the employment outcomes of participants with disabilities, taking into account their perception of interest‐job match. Participants were 115 high school students with disabilities who took part in an intensive school‐to‐work transition program that explored occupational interests in relation‐to‐work opportunities. Results of a 1‐way analysis of covariance indicated that severity of disability had a significant effect on the employment outcomes of participants despite interest‐job matching. Although participants experienced positive employment outcomes in terms of job entry, these outcomes may not necessarily translate into higher earnings.     

Neurobiological and memory models of risky decision making in adolescents versus young adults

Predictions of fuzzy-trace theory and neurobiological approaches are examined regarding risk taking in a classic decision-making task--the framing task--as well as in the context of real-life risk taking. We report the 1st study of framing effects in adolescents versus adults, varying risk and reward, and relate choices to individual differences, sexual behavior, and behavioral intentions. As predicted by fuzzy-trace theory, adolescents modulated risk taking according to risk and reward. Adults showed standard framing, reflecting greater emphasis on gist-based (qualitative) reasoning, but adolescents displayed reverse framing when potential gains for risk taking were high, reflecting greater emphasis on verbatim-based (quantitative) reasoning. Reverse framing signals a different way of thinking compared with standard framing (reverse framing also differs from simply choosing the risky option). Measures of verbatim- and gist-based reasoning about risk, sensation seeking, behavioral activation, and inhibition were used to extract dimensions of risk proneness: Sensation seeking increased and then decreased, whereas inhibition increased from early adolescence to young adulthood, predicted by neurobiological theories. Two additional dimensions, verbatim- and gist-based reasoning about risk, loaded separately and predicted unique variance in risk taking. Importantly, framing responses predicted real-life risk taking. Reasoning was the most consistent predictor of real-life risk taking: (a) Intentions to have sex, sexual behavior, and number of partners decreased when gist-based reasoning was triggered by retrieval cues in questions about perceived risk, whereas (b) intentions to have sex and number of partners increased when verbatim-based reasoning was triggered by different retrieval cues in questions about perceived risk.     

Learning-induced axonal remodeling: evolutionary divergence and conservation of two components of the mossy fiber system within Rodentia

Damage to the hippocampal formation results in profound impairments in spatial navigation in rats and mice leading to the widely accepted assumption that the hippocampal cellular and molecular memory mechanisms of both genera are conserved. Recently our group has shown in two rat strains that hippocampal-dependent training in the water maze specifically induces robust 'sprouting' of granule cell suprapyramidal mossy fiber axon terminal fields. Here we sought to investigate whether the pronounced remodeling of adult hippocampal circuitry observed in the rat is also present in the mouse motivated by the thought that subsequent studies using genetically-engineered mice could then be implemented to explore the molecular mechanisms underlying training-dependent axonal growth in adult rodents. However, in contrast to Wistar rats, no changes in the Timm's-stained area of mossy fiber terminal fields (MFTFs) were observed in C57BL/6J or 129Sv/EmsJ inbred wild-type mice after water maze training. Neither extending the duration of training nor scaling down the size of the apparatus was able to induce sprouting in mouse mossy fiber pathways. Though there may be similarities in the ultimate output of the hippocampus of rats and mice as inferred from lesion studies, the current results, as well as differences in learning and memory characteristics between the two genera, suggest that the way in which the component circuitry functions is likely to be different; a not too surprising conclusion given the substantial evolutionary distance between them (>20 million years). The present findings afford an opportunity for uncovering linkages between evolutionarily significant alterations in hippocampal circuitry in relation to genera-specific information storage requirements.     

When constituencies speak in multiple tongues: The relative persuasiveness of hawkish minorities in representative negotiation

Although constituencies often consist of opposing factions, we know little about the way such opposing factions influence the representative’s negotiation strategy. This study addressed this issue: Representatives negotiated as sellers on behalf of a group consisting of hawkish (competitive) and dovish (cooperative) factions. Experiments 1–3 showed that a minority of hawks was sufficient to influence the representatives to acting in a competitive way; only when all constituents unanimously advocated a cooperative strategy were representatives more conciliatory towards their negotiation partner. These tendencies did not differ as a function of the representatives’ pro-social versus pro-self value orientation, or the unanimity versus majority rule putatively used in the constituency to accept of reject the representative’s negotiated agreement. We conclude that hawkish minorities are persuasive and influential because representatives accord more weight to hawkish than to dovish messages.     

Positive Masculinity Among Latino Men and the Direct and Indirect Effects on Well‐Being

Counselors are learning ways to promote well‐being among Latinas/os. This study tested the hypothesis that caballerismo, a prosocial form of masculinity, would predict subjective well‐being among a sample of predominantly Mexican/Mexican American men. The moderating role of religious involvement was also tested and hypothesized as having a bolstering effect. Results supported the main hypotheses. Implications are discussed as they concern counseling, training, and future research. Los consejeros están aprendiendo formas de promover el bienestar entre la comunidad latina. Este estudio examinó la hipótesis de que el caballerismo, una forma de masculinidad de orientación social, podría predecir el bienestar subjetivo en una muestra de hombres predominantemente mexicanos o méxico‐americanos. También se examinó el efecto moderador de la participación religiosa y se formuló la hipótesis de que tendría un efecto de impulso. Los resultados apoyaron las hipótesis principales. Se discuten implicaciones en cuanto a la consejería, capacitación e investigaciones futuras.     

Future Prospects,Deprivation, and Criminality – A Longitudinal Birth Cohort Study

The article explores the longitudinal relationship between subjective and objective deprivation in early adolescence on the one hand, and criminal offending in adolescence and early adulthood on the other. Data from the Stockholm Birth Cohort Study (n = 15,117), containing information from surveys and registers are used. Bivariate analyses confirm a relationship between low socioeconomic status and both subjective and objective deprivation. Subjective deprivation alone is related to offending only for those from less privileged background. Subjective and objective deprivation in combination is associated with a higher risk of offending for all individuals, although the less privileged background, the higher the risk.