Inhibition of aggression by progesterone and its metabolites in female Syrian hamsters

The sequence of estradiol and progesterone is known to inhibit the expression of aggression in female hamsters. Despite the key importance of progesterone in the inhibition of aggression, little is known of the mechanisms through which progesterone may exert this effect. Three experiments were performed to assess the degree to which metabolites of progesterone can affect aggression in female Syrian hamsters. Systemic estradiol treatment followed by injections of either progesterone (300 μg IP) or 4‐pregnen‐21‐ol‐3,20‐dione (DOC, 300 μg IP) reliably inhibited aggression. Systemic injection (75, 150, or 300 μg IP) of either 5α‐pregnan‐3α,21‐diol‐20‐one (THDOC) or 5α‐pregnan‐3α‐ol‐20‐one (3α,5α‐THP) did not affect aggression. Intracerebroventricular infusion of 3α,5α‐THP following systemic estradiol treatment also did not affect aggression. In a third experiment, female hamsters were given systemic treatments with estradiol and progesterone that were subthreshold with respect to inhibition of aggression. In these females, intracerebroventricular infusion of THDOC inhibited aggression. These results indicate that metabolites of progesterone can inhibit aggression, most notably in synergy with progesterone itself. Aggr. Behav. 27:372–381, 2001. © 2001 Wiley‐Liss, Inc.     

An evaluation of synchronous reinforcement for increasing on-task behavior in preschool children

A synchronous-reinforcement schedule is a type of schedule of covariation in which the onset and offset of the reinforcer covaries with the onset and offset of behavior. This study was a proof-of-concept demonstration of the efficacy of synchronous reinforcement for on-task behavior (completing a preacademic skill) and an evaluation of preschoolers' preference for this schedule in comparison to a more traditional schedule of reinforcement. Specifically, we compared the effects of a synchronous-reinforcement schedule to one in which continuous access to stimuli was delivered at the end of the session and yoked to the duration of on-task behavior that occurred during the session (accumulated reinforcement). Results showed the synchronous-reinforcement schedule was more effective for increasing on-task behavior and preferred by most participants.     

Is there a hierarchy of social inferences? The likelihood and speed of inferring intentionality, mind, and personality

People interpret behavior by making inferences about agents' intentionality, mind, and personality. Past research studied such inferences 1 at a time; in real life, people make these inferences simultaneously. The present studies therefore examined whether 4 major inferences (intentionality, desire, belief, and personality), elicited simultaneously in response to an observed behavior, might be ordered in a hierarchy of likelihood and speed. To achieve generalizability, the studies included a wide range of stimulus behaviors, presented them verbally and as dynamic videos, and assessed inferences both in a retrieval paradigm (measuring the likelihood and speed of accessing inferences immediately after they were made) and in an online processing paradigm (measuring the speed of forming inferences during behavior observation). Five studies provide evidence for a hierarchy of social inferences-from intentionality and desire to belief to personality-that is stable across verbal and visual presentations and that parallels the order found in developmental and primate research.     

Nathan Birnbaum and Tuvia Horowitz: Friendship and the Origins of an Orthodox Ideologue

Nathan Birnbaum, early Zionist, Yiddishist and later general secretary of the Orthodox Agudat Yisrael, is a perplexing figure to modern Jewish historiography. While the trajectory of his early career as a Zionist and his leadership in the first Conference for the Yiddish Language have been well charted, his later years have been largely overlooked. In the years leading up to and during the First World War, Birnbaum turned his back on the secular political groups which had defined his public persona, and became a ba'al teshuva, a penitent returnee to Orthodox Judaism. Essential to his turn to Orthodoxy, and to his very quick arrival and success in the Orthodox political world, was his relationship with a young rabbi from Eastern Hungary, Tuvia Horowitz. Horowitz, the nephew of the Viznitser Rebbe, sought out Birnbaum upon receiving rumors of his teshuva while a refugee in Vienna, and the relationship between the two men quickly grew to a warm collegiality. Detailed in the extensive correspondence which spanned the rest of Birnbaum's life, their friendship sheds light on Birnbaum's intellectual transformation, as well as the central role played by Horowitz in Birnbaum's emergence as an Orthodox leader.     

Higher‐Order Factor Structures and Intercorrelations of the 16PF5 and FIRO‐B

This study investigated the intercorrelations and the independent and combined factor structures of the Sixteen Personality Factor Questionnaire Fifth Edition (16PF5) and the Fundamental Interpersonal Orientation‐Behaviour Scale (FIRO‐B). Four thousand four hundred and fourteen U.S. participants completed these measures as part of executive assessments between 1994 and 2003. Exploratory factor analyses supported the five‐factor higher‐order structure of the 16PF5; however, the three‐component structure for the FIRO‐B was not supported. A six‐factor structure was found to underlie the variance in the measures in combination. Five of these were close to the 16PF5 higher‐order structure, but a sixth factor labelled Social Independence also emerged. This new factor consisted of the 16PF5 primaries of Liveliness and Social Boldness, and the FIRO‐B Wanted Control scale.     

A statewide survey of audiologists regarding auditory processing disorders

This study surveyed all licensed Arkansas audiologists (N = 127) regarding auditory processing disorders in children and adults, with 16 items covering demographic information, knowledge, identification and diagnosis, service provision, and referral. Analysis indicated 40% and 35% of the 62 respondents were "very" or "somewhat comfortable" with diagnosing auditory processing disorders in adults and children, respectively. In the current work setting, 58% did not provide auditory processing testing, 44% had never performed such testing, and 40% did not answer a question related to referral sources. The lack of consistent testing or referral probably leaves community persons with auditory processing disorders at risk for being overlooked or misdiagnosed.     

Spouses' family work participation and its relation to wives' occupational level

Past statistical and conceptual limitations may mistakenly overstate women's and men's unequal participation in family work. The present study used log-linear models to examine spouses' participation in household work and parenting and their perceptions of equity regarding this participation. Wives' occupational level, an important but often overlooked source of variation, was used to classify couples according to three family types—single-wage traditional (TR)—and two types of dual-wage families—dual-earner (DE) in which wives held jobs while husbands held jobs or careers, and dual-career (DC). Data were taken from a study of 81 couples of comparable socioeconomic status and age who had an adolescent child living at home. As hypothesized, results indicated more sharing of household work in dual-wage families than typically reported, particularly for DC families. Husbands and wives in all family types were largely in agreement regarding the distribution of responsibility for household and parenting tasks, but perceptions of equity varied by family type. Spouses with comparable perceptions of fairness reported higher marital satisfaction.Appreciation is expressed to Sue Lucas and Darl Lewis for their assistance with this study. Portions of this paper were presented at the Third Annual Meeting of the American Psychological Society, Washington, DC June, 1991.     

Assessing perceptions of occupational-family integration

Consideration of how to integrate occupational and family roles is crucial to the psychological development of adolescents and young adults today. This paper reports on a self-report instrument designed to assess perceptions of involvement in occupational and family roles in young women and men. The Orientations to Occupational-Family Integration consists of three separate scales that reflect three types of orientation—(1) male traditional, (2) female traditional, and (3) male and female atraditional. Reliability and validity data are reported from two studies, one with 81 adolescent girls and one with 122 college women and men. Uses of the measure for research and educational purposes are described briefly.Appreciation is expressed to Sue Lucas and Darryl Lewis for their assistance in data collection for Study I, and to the University Research Institute at the University of Texas at Austin for grant awards for each of the two studies. The order of the third and fourth authors is alphabetical. L. Suzanne Dancer is now at the University of Wisconsin — Milwaukee.     

Plagiarism as a Social Contract,a New Way to Approach Plagiarism

Journal of Academic Ethics - Most cases of plagiarism involve a power differential where not every person has the same ability to enter into a social contract. A social contract requires that each...     

Successful detection of verbal and visual concealed knowledge using an RT‐based paradigm

An increasing number of researchers are exploring variations of the Concealed Knowledge Test (CKT) as alternatives to traditional ‘lie‐detector’ tests. For example, the response times (RT)‐based CKT has been previously shown to accurately detect participants who possess privileged knowledge. Although several studies have reported successful RT‐based tests, they have focused on verbal stimuli despite the prevalence of photographic evidence in forensic investigations. Related studies comparing pictures and phrases have yielded inconsistent results. The present work compared an RT‐CKT using verbal phrases as stimuli to one using pictures of faces. This led to equally accurate and efficient tests using either stimulus type. Results also suggest that previous inconsistent findings may be attributable to study procedures that led to better memory for verbal than visual items. When memory for verbal phrases and pictures were equated, we found nearly identical detection accuracies. Copyright © 2007 John Wiley & Sons, Ltd.