Effects on Volunteering of the September 11, 2001, Attacks: An Archival Analysis1

Data from a national online organization that matches volunteers with service organizations places volunteers were analyzed to answer questions regarding the impact of the September 11, 2001, attacks on volunteering in the United States. Results showed that: (a) following September 11, there was a dramatic increase in the number of people who offered to volunteering, and the increase lasted for about 3 weeks; (b) the greatest increase in volunteering occurred for crisis‐related organizations, but volunteering increased significantly for all kinds of charities and service organizations; and (c) the demographic correlates of volunteering changed little in the wake of the attacks. The results are discussed in the context of psychological theories of the factors that motivate prosocial actions.     

The Stability of Self-Reported Physical Symptoms in African American Mothers and Their Impact on Children

Self-reported physical symptoms are an important marker of health and well-being, particularly among African American women. The stability of African American women’s physical symptoms or the impact of their symptoms on their children, however, has yet to be examined. This longitudinal study examined the stability of maternal self-reported physical symptoms, as well as their role in shaping child-reported physical symptoms, among 137 low-income African American families. Findings revealed that mothers’ self-reported physical symptoms were stable over 2.5 years. Mothers who reported higher levels of physical symptoms were more likely to have children who concurrently reported higher levels of symptoms. Physical symptoms reported by mothers at the first assessment also predicted child-reported physical symptoms 2.5 years later, but only for boys. Physical symptoms appear to be an important, yet understudied, symptom domain that may have significant implications for the health and well-being of African American families.     

Adolescent Self-Regulation as Resilience: Resistance to Antisocial Behavior within the Deviant Peer Context

This study tests the hypothesis that self-regulation serves as a resiliency factor in buffering youth from negative influences of peer deviance in middle to late adolescence. The interactive effects between peer deviance and self-regulation were investigated on change in antisocial behavior from age 17 to 19 years in an ethnically diverse sample of adolescents. A multi-agent construct was created using adolescent, parent, and teacher reports of self-regulation and peer deviance. Results indicated that self-regulation shows convergent validity and covaries as expected with developmental patterns of adolescent antisocial behavior. Self-regulation moderated the association of peer deviance with later self-reported adolescent antisocial behavior after controlling for prior levels of antisocial behavior. The implications of these findings for models for the development of antisocial behaviors and for intervention science are discussed.     

Modality exclusivity norms for 423 object properties

Recent work has shown that people routinely use perceptual information during language comprehension and conceptual processing, from single-word recognition to modality-switching costs in property verification. In investigating such links between perceptual and conceptual representations, the use of modality-specific stimuli plays a central role. To aid researchers working in this area, we provide a set of norms for 423 adjectives, each describing an object property, with mean ratings of how strongly that property is experienced through each of five perceptual modalities (visual, haptic, auditory, olfactory, and gustatory). The data set also contains estimates of modality exclusivity—that is, a measure of the extent to which a particular property may be considered unimodal (i.e., perceived through one sense alone). Although there already exists a number of sets of word and object norms, we provide the first set to categorize words describing object properties along the dimensions of the five perceptual modalities. We hope that the norms will be of use to researchers working at the interface between linguistic, conceptual, and perceptual systems. The modality exclusivity norms may be downloaded as supplemental materials for this article from brm.psychonomic-journals.org/ content/supplemental.     

Hypothalamo-Pituitary-Adrenocortical Regulation Following Lesions of the Central Nucleus of the Amygdala

Previous reports indicate that the central nucleus of the amygdala (CeA) stimulates adrenocorticotropin and corticosterone secretion, suggesting a role for this region in central hypothalamo-pituitary-adrenocortical (HPA) stress regulation. To evaluate this hypothesis, this study assessed the impact of CeA lesion on the response of hypophysiotrophic paraventricular nucleus (PVN) neurons to acute restraint and chronic unpredictable stress exposure. In contrast to previous reports, CeA lesions did not affect corticosterone or ACTH secretion induced by acute stress. Acute restraint increased PVN corticotropin releasing hormone (CRH) mRNA expression, increased the number of parvocellular PVN neurons expressing the co-secretagogue arginine vasopressin (AVP), and induced cFOS mRNA expression in the parvocellular PVN. However, there was no additional effect of CeA lesion on any measure of PVN activation. Chronic unpredictable stress exposure induced long-term activation of the HPA axis, noted by thymic involution, adrenal hypertrophy and increased PVN CRH mRNA expression. Stress-induced changes in thymus and adrenal weights were not affected by CeA lesion. Further, CeA lesion rats did not differ from controls in post-stress CRH mRNA expression. However, basal CRH mRNA expression was increased in the PVN of CeA rats, suggesting that the CeA plays a role in long-term inhibition of the PVN. The results of these studies are not consistent with the hypothesis that the CeA is necessary for stress-induced pituitary-adrenocortical activation. Rather, this region may play a stressor-specific modulatory role in regulation of HPA function.     

Reinforcement magnitude effects in first- and second-order conditioning of directed action

Three experiments investigated the effects of reinforcement magnitude on conditioned key pecking in pigeons. Experiment 1, which included between-groups and within-subject designs, yielded significant effects of unconditioned stimulus (US) magnitude on the within-conditioned stimulus (CS) distribution of key pecks and on choice behavior, but no effect on the overall rate of key pecking. Experiment 2 employed a larger US-magnitude difference in a within-subject design. This manipulation resulted in differential rates of key pecking as well as a significant choice effect and differential within-CS key-peck distributions. A second-order conditioning procedure was used in Experiment 3, in which diffuse, visual stimuli (S1's) served as Pavlovian reinforcers for two key-light S2's. The S1 previously paired with a large US was more effective in conditioning second-order key-peck behavior to an S2 than was the S1 paired with a small US. The results of these experiments demonstrate that the associative effects of US magnitude can be expressed in the strength of CS-directed motor responding. The distinctive within-CS key-peck distributions in first-order conditioning suggests an interaction between CS- and US-directed responses.     

The computer as experimenter in social psychological research

The effects of familiarity and exposure paradigm on evaluative meaning were investigated in four experiments involving 161 Ss. A DEC PDP-10 computer linked to a VB10-C display screen for 1/0 assigned Ss to condition, presented instructions, tested Ss’ understanding of the instructions, generated and displayed stimuli in various frequencies, and obtained evaluative ratings of the stimuli. Problems encountered, Ss’ reactions, and current and possible use of the computer in social psychological research are discussed.     

The Research Status of Clayman and Heritage’s (2002) The News Interview

The databases of three books with almost identical titles are examined in order to throw light on the theory of neutralistic professionalism of news interviewers and on the empirical logic of the most recent of the three: The news interview by Steven Clayman and John Heritage (2002). Instead of a theory of neutralism, a theory of perspectivity that applies to both interviewer and interviewee is presented. The logic of Clayman and Heritage’s arguments is found wanting in a number of respects: (a) their treatment of TV and radio interviews as if they were identical; (b) their treatment of news interviews in the United States and Great Britain as essentially the same in practices and ground rules; (c) their inferences from isolated excerpts to the structure of the news interview itself; (d) their very concept of the news interview as “an interactional encounter between a journalist and one or more newsworthy public figures” (p. 1). Inaccuracies in their database make it unsatisfactory as support for a theory of neutralistic professionalism. Despite these limitations, Clayman and Heritage provide an excellent overview of the recent history of the news interview in the United States and Britain and a wealth of information about the local organization of news interviews.