The role of the dorsal striatum and dorsal hippocampus in probabilistic and deterministic odor discrimination tasks

Three experiments explored the contribution of the cortico-striatal system and the hippocampus system to the acquisition of solutions to simultaneous instrumental odor discriminations. Inactivation of the dorsal striatum after rats had reached criterion on a three problem probabilistic set of discriminations--A (80%) vs. B (20%), C (67%) vs. D (33%), E(67%) vs. F(33%)--impaired test performance and disrupted performance when the rats were tested with novel cue combinations (C vs. F and E vs. D), where control animals chose C and F. In contrast, inactivating the dorsal hippocampus enhanced performance on this task and on a deterministic discrimination A (100%) vs. B (0%). These results are consistent with the complementary learning systems view, which assumes that the cortico-striatal and hippocampal system capture information in parallel. How this information combines to influence task performance depends on the compatibility of the content captured by each system. These results suggest that the trial-specific information captured by the hippocampal system can be incompatible with the across-trial integration of trial outcomes captured by the cortico-striatal system.     

Is there a baby in the bathwater? Maybe: some methodological issues for the de novo protein synthesis hypothesis

The de novo protein synthesis hypothesis has a long history and will no doubt continue to influence research. Yet, the primary behavioral evidence for this claim continues to come from studies in which amnesia is produced by broad scale protein synthesis inhibitors such as anisomycin. What is remarkable is the uncritical acceptance of the idea that because anisomycin is a protein synthesis inhibitor then it must have produced amnesia because it prevented translation. Several viable alternative interpretations of such experiments are discussed here and it is concluded that there is nothing to be gained by the continued use of broad-scaled antibiotics to address this hypothesis. Moreover, this approach cannot answer two critical and related questions - why must new proteins be synthesized and what are they? A focus on specific proteins such as those synthesized locally and upregulate the translation of other proteins may be a promising approach to answering these questions.     

Internal motivation to respond without prejudice and automatic egalitarian goal activation

Past research has shown that people who are motivated primarily by their internalized beliefs to respond without prejudice are less likely to show implicit forms of racial bias (e.g., Devine, P. G., Plant, E. A., Amodio, D. M., Harmon-Jones, E., & Vance, S. L. (2002). The regulation of explicit and implicit race bias: The role of motivations to respond without prejudice. Journal of Personality and Social Psychology, 82, 835-848). We tested the idea that such individuals inhibit implicit race bias by automatically activating egalitarian goals. Study 1 showed that participants high in internal motivation but low in external motivation (i.e., primary internal) displayed more egalitarianism, but only after they had been subliminally exposed to African American faces. Study 2 showed that primary internal motivation was associated with lower levels of automatic stereotype activation and this effect was mediated by egalitarian goal activation. These results provide converging evidence that the relationship between primary internal motivation and low levels of implicit bias stems from the activation of egalitarian goals. We discuss the implications of these findings for efforts to reduce cognitive and affective forms of implicit racial bias.     

Method matters: effects of explicit versus implicit social comparisons on activation, behavior, and self-views

The authors investigated the impact of explicit versus implicit social comparisons. Simply being primed with a superior or inferior standard (implicit comparison) produced contrast as evidenced by accessibility of self-knowledge (Study 2), intellectual performance (Study 3), and self-ratings (Study 4), inconsistent with the standard. However, when participants were explicitly asked to compare, increased accessibility of a similarity focus (Study 1) and self-knowledge, behavioral performance, and self-ratings congruent with the standard were obtained more easily, indicative of assimilation. Explicit comparisons produced assimilation when the self was seen as mutable (rather than immutable; Study 4), when behavioral consequences were measured immediately after the comparison (rather than later; Study 3), and when the participants described (rather than ranked) their intelligence (Study 5). These findings support the interpretation comparison model. Implications for resolution of empirical inconsistencies in the social comparison literature are discussed.     

Beliefs About Faith and Work: Development and Validation of Honoring God and Prosperity Gospel Scales

Disputes over the connection between beliefs and behaviors, coupled with the relative paucity of survey measures of specific theological beliefs related to work and its association with financial success, motivated the development of two beliefs scales: beliefs about work as a means to honor God and beliefs about God promising prosperity for believers. Analyses demonstrated these two scales to be distinct from one another and reliable. Using a national sample of over 1,000 working adults, we assessed the relationship of the specific belief scales to Lynn et al.’s (J Bus Ethics 85(2):227–241, 2009) faith at work scale, Mirels and Garrett’s (J Consul Clin Psychol 36(1):40–44, 1971) Protestant Work Ethic scale, two personality scales (Conscientiousness and Neuroticism), entrepreneurial behavior, helping behavior, and religious tradition. Results indicate convergent and divergent validity and demonstrate the potential utility of these beliefs scales for predicting work-related attitudes and practices.     

Women Experiencing Intimate Partner Violence: Effects of Confiding in Religious Leaders

IPV is the most challenging mental health problem facing clergy. Abused women (n = 476), most of whom are Christians living at home (not in shelters), sought assistance from domestic violence centers. Data obtained from questionnaires demonstrated that confiding in clergy predicts higher self-esteem and reduces the impact of lack of social support on self-esteem, self-efficacy, and life satisfaction. Compassionate clergy counseling can have a positive influence on psychological outcomes of women in abusive relationships.     

An examination of employee perceptions of a subjective performance appraisal system

This study sought to identify factors related to employee perceptions of the accuracy of performance ratings they received using a subjective rating system. It also sought to determine if the relationship between these correlates and perceived fairness and accuracy was moderated by employee sex and/or race. The results were based on the analysis of items from questionnaires completed by 234 government employees whose job performance was rated on a graphic rating scale. A factor analysis of the predictor items yielded three factors. The first factor dealt with employees' confidence in their supervisors' qualifications to accurately rate their performance, the second with matters related to a discussion of appraisal outcomes (i.e., rewards and career progress), and the third with the relevance of the appraisal instrument. The measure of perceived fairness and accuracy was regressed onto scores derived for each of the three factors, plus a set of contrast variables representing the various race/sex groupings and a set of demographic variables (viz., job tenure, education level, and supervisory status). Factors 1 and 2, race, and supervisory status were found to be significantly related to perceived fairness and accuracy. Moreover, the relationship of the criterion with job tenure was moderated by race, that with factor 2 was moderated by sex. Management implications of these findings are discussed.     

Differential diagnosis of steroid-dependent nephrotic syndrome with psychosis: Practical and ethical issues

The present case illustrates practical and ethical issues that can be encountered by clinical psychologists providing consultation services in medical settings. The neuropsychological consultation service was asked to evaluate a 22-year-old male with psychosis, steroid-dependent nephrotic syndrome, and a family history of schizophrenia. MRI revealedmarked cortical atrophy. Clinical findings were consistent with (1) steroid inducedapparent atrophy, which has been shown to be reversible with withdrawal of steroids; (2) uremia secondary to steroid withdrawal; (3) cortical atrophy, found in some schizophrenics; or (4) an atypical, diffuse degenerative disorder. Clinical interview and psychological testing revealed significant thought disorder, prominent delusions, somatic hallucinations, and mood disturbance. Deterioration in social and academic functioning was also present. Except for impaired attention and concentration, neuropsychological evaluation showed no clear evidence of brain-based dysfunction. Further, neuropsychological results effectively ruled out a degenerative process and were not consistent with a steroid effects profile. A conclusive differential diagnosis of steroid induced psychosis versus severe psychopathology would require withdrawal from steroids and antipsychotics. In addition to the practical and ethical issues of withholding antipsychotics, steroid withdrawal would require either dialysis or renal transplant surgery. Decision making regarding dialysis dependency and the possibility of postsurgical psychosis secondary to true psychopathology were salient issues to both the patient and the treatment team.