Social organization predicts nature of infant-adult interactions in two species of wild guinea pigs (Cavia aperea and Galea monasteriensis)

The authors compared interactions of infants with mothers and unfamiliar females in a novel environment in 2 caviomorph rodent species: the harem-living Cavia aperea, the probable progenitor of the domestic guinea pig; and the pair-living Galea monasteriensis. In C. aperea, interactions with mothers and unfamiliar females were largely similar; in G. monasteriensis, interactions with the mother, but not unfamiliar female, were characterized by physical closeness and sociopositive behavior. In G. monasteriensis, plasma cortisol levels were lower when with the mother than when with the unfamiliar female. Results are consistent with the species' social organizations and suggest that behavioral interactions of pups with mothers and other females in domestic guinea pigs reflect primarily the social organization of the progenitor species rather than domestication.     

The regional genetic and newborn screening service collaboratives: the first two years

Newborn screening and genetic technologies are expanding and changing rapidly, increasing the demand for genetic specialty services. Because of the scarcity and geographic maldistribution of genetic specialty services, access to these services is a critical issue. This article discusses some of the efforts initiated by the Maternal and Child Health Bureau of the Health Resources and Services Administration, particularly the establishment of regional genetic and newborn screening collaboratives to improve access to these services and expertise.     

Appearance-related commentary, body image, and self-esteem: Does the distress associated with the commentary matter?

Research that has examined the association between appearance-based commentary and body image has generally focused on the frequency of occurrence of the commentary, not the subjective rating of the distress associated with the feedback. The current study examined both frequency and distress (effect) components of commentary in a sample of 246 undergraduate female students aged 18–25. Significant correlations were found between both frequency and effect dimensions of commentary and measures of body image disturbance and self-esteem. The utility of both frequency and effect variables in predicting body image disturbance and self-esteem was demonstrated in regression analyses. Implications of the findings for broadening the assessment of appearance-based commentary to include both dimensions of the construct are discussed.     

Detecting true lies: police officers' ability to detect suspects' lies

Ninety-nine police officers, not identified in previous research as belonging to groups that are superior in lie detection, attempted to detect truths and lies told by suspects during their videotaped police interviews. Accuracy rates were higher than those typically found in deception research and reached levels similar to those obtained by specialized lie detectors in previous research. Accuracy was positively correlated with perceived experience in interviewing suspects and with mentioning cues to detecting deceit that relate to a suspect's story. Accuracy was negatively correlated with popular stereotypical cues such as gaze aversion and fidgeting. As in previous research, accuracy and confidence were not significantly correlated, but the level of confidence was dependent on whether officers judged actual truths or actual lies and on the method by which confidence was measured.     

Light direction from shad(ow)ed random Gaussian surfaces

Three human observers estimated the illumination direction for samples of random Gaussian surfaces illuminated by a collimated beam from random directions. These stimuli appear as 'texture' due to shading and shadowing (the surface on the microscale was Lambertian of uniform albedo; thus texture appears only through shading and shadowing). We found that observers were able to estimate the azimuth of the source with remarkable accuracy. In the shading regime (no shadows) the observers committed 180 degrees azimuth errors with 50% probability, whereas in the shadow-dominated regime they were able to avoid this convex/concave confusion to a large extent. They evidently relied on second-order statistics in the shading regime and used an unidentified first-order cue in the shadow regime. The elevations of the source were also estimated with remarkable precision. We attribute this to the statistical homogeneity of the sample which can apparently be exploited by the observers. Likely cues are the fraction of shadowed surface, average intensity and rms contrast. The ability of human observers to estimate the illumination direction from surface texture no doubt contributes to the ability to estimate the light field in scenes, which is a prerequisite to the photometric parsing of scenes (shape from shading, and so forth).     

Suicidal behavior in schizophrenia and schizoaffective disorder: examining the role of depression

Understanding the relationship between depression and suicidal behavior among individuals with schizophrenia and schizoaffective disorder can aid assessment and treatment. In this study, 86 individuals with schizophrenia and schizoaffective disorder were assessed for past and current suicidal behavior, depression, hopelessness, and reasons for living. Thirty-four percent reported a history of suicide attempts. Suicidal behavior typically occurred 4.5 years after the onset of psychosis and 7.5 years after the onset of the first major depressive episode for those who had a history of major depression. Depression was frequent among both attempters and non-attempters, but only half of the attempters reported a suicide attempt during an episode of major depression. And almost half of those with depression never made a suicide attempt despite a long history of illness. Although depression is a potential stressor for triggering suicidal behavior in a vulnerable subset of individuals with schizophrenia, schizophrenia research must identify other risk factors for suicidal behavior. Clinicians should remember that even without a depressive episode there is still a significant risk for suicidal behavior in schizophrenia.     

Jealousy and the meaning (or nonmeaning) of violence

Previous research has indicated that jealousy is one of the major triggers of domestic violence. Three studies here examined North Americans' ambivalent feelings about jealousy and jealousy-related aggression. In Study 1, it was shown that participants believed both that jealousy can be a sign of insecurity and a sign of love. In Study 2, it was shown that this equating of jealousy with love can lead to the tacit acceptance of jealousy-related violence. In Study 3, it was shown that a relative acceptance of jealousy-related aggression extends to cases of emotional and sexual abuse by husbands against their wives. In both Studies 2 and 3, men who hit or abused their wives over a jealousy-related matter were judged to romantically love their wives as much as those who did not engage in abuse. Violence in the context of a non-jealousy-related argument was seen quite negatively, but it lost a great deal of its negativity in the jealousy case.     

Attitudes toward physician-assisted suicide and death anxiety

A scale to measure approval of physician-assisted suicide was devised. Scores on the scale were uncorrelated to death anxiety in a sample of 168 students.     

Multicultural Issues in School-Based Consultation Conceptual and Research Considerations

In this article, we review literature relevant to multicultural issues in school-based consultation. Specifically, multicultural literature in the counseling and psychotherapy fields is presented as it relates to consultation. Ways in which culture may affect the consultant, consultee, and client are suggested. Because of the paucity of multicultural research in consultation and lack of major break-throughs in multicultural research as related to consultation, a conceptual framework related to the utility of multicultural issues is presented as a new paradigm for future investigations.     

Gender Differences in Self-Perception and Negative Recall Biases

This study investigated gender differences inthe accuracy of self-perceptions and whetherself-perception biases are related to negative recallbiases. Participants were 275 female and 213 malecollege students. Approximately 10% of the participantswere minorities (mostly African American and Asian). Ona masculine task, gender differences in self-perceptionswere found for three measures of accuracy: The accuracy of self-evaluations, calibration,and response bias. Females underestimated theirperformance, were less well calibrated, and showed amore conservative response bias than did males. Ashypothesized, no gender differences in the accuracy ofself-evaluations were found for feminine and neutraltasks. Participants' expectancies mediated the genderdifferences in post task self-evaluations ofperformance. In addition, evidence for a negative recallbias was found. Females were more likely than males torecall their mistakes even with performance and accuracyof self-evaluations controlled. The implications of females' greater self-perception biases onmasculine tasks are discussed and suggestions for futureresearch are made.