Effects of free food deliveries and temporal contiguity on choice under concurrent-chain schedules

Eight pigeons responded in a concurrent chain with variable-interval (VI) 10-sec and VI 20-sec terminal links. Free food deliveries were then added to the initial links according to a variable-time (VT) 20-sec schedule in two conditions that differed in terms of whether a differential reinforcement of other (DRO) contingency was also arranged, which ensured that those deliveries could not occur within 2-sec of a response. Preference for the VI 10-sec terminal link increased when VT food was added, but not when the DRO contingency was operative, showing that free food deliveries affected preference only when those deliveries could be temporally contiguous with choice responding. This finding suggests that Mazur’s (2003) report of increased preference with added VT food, replicated here, was due to adventitious reinforcement. Current models for behavioral choice are limited because they are based entirely on temporal relations between stimuli and reinforcers and fail to take into account response-reinforcer contiguity.     

Gendered Reminiscence Practices and Self-Definition in Late Adolescence

The purpose of this study was to examine gender differences in the emotional construction of life-threatening events (LTEs) that were chosen as self-defining by late adolescents. European American college students (41 women, 25 men) whose average age was 19 were selected from a larger sample (n = 139) because they reported at least 1 LTE among 3 self-defining memories. Memory narratives were elicited with a questionnaire (Singer & Moffitt, 1991–1992) and coded for emotional position. As expected, tough, action-packed positions were more prevalent in men's narratives, and compassionate positions were more prevalent in women's narratives. Unexpectedly, narratives that emphasized one's own vulnerability (fear or sadness) were equally prevalent for men and women, and women's emotional discourse was more conditional upon type of event, i.e., deaths vs. assaults. Findings provide the most explicit evidence to date that some gendered reminiscence practices found in prior studies of children are reflected in late adolescents' self-defining reminiscences. Implications are also discussed for a more situated understanding of gendered reminiscence pratices and for theories of identity development.     

Representations of ethnicity in people's accounts of local community participation in a multi‐ethnic community in England

In this paper we examine the impact of the social construction of ethnic identities on the likelihood of local community participation. We do so in the context of an applied interest in the current policy emphasis on partnerships between government and local communities in initiatives to reduce health inequalities, and a conceptual interest in the role of social representations in perpetuating unequal power hierarchies. Semi‐structured interviews were conducted with 75 residents of a deprived multi‐ethnic area in south England. Informants described themselves as African‐Caribbean, Pakistani and White English; half men and half women, aged 15–75. We draw attention to the way in which ethnic identities may be constructed in ways that undermine the likelihood of local community participation. Stereotypical representations of ethnically defined ingroups and outgroups (the ethnic ‘other’) constituted key symbolic resources used by our informants in accounting for their low levels of engagement with local community networks. We examine the content of these stereotypes, and highlight how their construction is shaped by historical, economic and social forces, within the context of the ‘institutional racism’ that exists in England. Copyright © 2001 John Wiley & Sons, Ltd.     

Why recall our highs and lows: relations between memory functions, age, and well-being

This study examined whether positive and negative memories (life story high and low points) were differentially used for reminiscence functions concerning self and social aspects of reminiscing, and relations between function use and well-being in two age groups. Life story high and low points were collected from a sample of emerging (n =56) and older (n =55) adults, as well as a measure of the use of these memories for the self-functions of death preparation, identity, and problem solving, and the social functions of conversation and teach/inform, and a measure of psychological well-being. Memories were also coded for whether or not they contained a redemptive narrative structure (from emotionally negative to emotionally positive). Results showed that the endorsement of reminiscence functions did differ by memory type, with high points more often endorsed for the functions of identity, teach/inform, and conversation than low points. These main effects were qualified by memory type x age interactions. The use of these functions for each kind of memory was also related to well-being, but differentially for older and younger people, and redemptive sequencing was especially important to the well-being of the younger group. Findings are discussed in terms of the importance of different emotional memories for self and well-being at different points in the lifespan.     

Combined Audience and Video Feedback With Cognitive Review Improves State Anxiety and Self-Perceptions During Speech Tasks in Socially Anxious Individuals

This study investigated the effects of combined audience feedback with video feedback plus cognitive preparation, and cognitive review (enabling deeper processing of feedback) on state anxiety and self-perceptions including perception of performance and perceived probability of negative evaluation in socially anxious individuals during a speech performance. One hundred and forty socially anxious students were randomly assigned to four conditions: Cognitive Preparation + Video Feedback + Audience Feedback + Cognitive Review (CP + VF + AF + CR), Cognitive Preparation + Video Feedback + Cognitive Review (CP + VF + CR), Cognitive Preparation + Video Feedback only (CP + VF), and Control. They were asked to deliver two impromptu speeches that were evaluated by confederates. Participants’ levels of anxiety and self-perceptions pertaining to the speech task were assessed before and after feedback, and after the second speech. Compared to participants in the other conditions, participants in the CP + VF + AF + CR condition reported a significant decrease in their state anxiety and perceived probability of negative evaluation scores, and a significant increase in their positive perception of speech performance from before to after the feedback. These effects generalized to the second speech. Our results suggest that adding audience feedback to video feedback plus cognitive preparation and cognitive review may improve the effects of existing video feedback procedures in reducing anxiety symptoms and distorted self-representations in socially anxious individuals.     

An Experimental Analysis of Operant Learning in the Parakeet

Twenty-five parakeets were used as subjects in a study involving food-rewarded operant learning. The parakeet behaved essentially in the same way as other birds (Leghorn chicken, Wyandotte chicken, pigeon, quail, turkey, etc.) with respect to number of rewarded reactions to criterion and percentage of animals learning. Parakeets, however, learned significantly faster than all other birds. These findings have implications within the framework of evolutionary comparative learning hypotheses.     

Mobilizing self through short-term dynamic interpersonal psychotherapy: a preliminary report

Background: The key features of short-term dynamic interpersonal psychotherapy (STDIP) are outlined along with the background of its development. Preliminary data demonstrating functional improvement in a small case series of patients is presented.

Methods: Nineteen patients were evaluated at commencement and end of therapy in a pilot study. Instruments used were the Childhood Trauma Questionnaire (CTQ); Beck Depression Inventory (BDI); Brief Symptom Inventory (BSI); COPE (Coping Style Questionnaire); Relationship Styles Questionnaire (RSQ) and Social Adjustment Scale-Self Report (SAS-SR).

Results: This cohort had significantly elevated scores on the CTQ. They demonstrated substantial improvement on measures including the BDI, and several subscales of BSI, COPE, RSQ and SAS-SR.

Conclusions: The small numbers and naturalistic design preclude firm conclusions however the results suggest that STDIP can be used to successfully treat patients, notwithstanding a history of childhood trauma.     

Why recall our highs and lows: Relations between memory functions,age, and well-being

This study examined whether positive and negative memories (life story high and low points) were differentially used for reminiscence functions concerning self and social aspects of reminiscing, and relations between function use and well-being in two age groups. Life story high and low points were collected from a sample of emerging (n =56) and older (n =55) adults, as well as a measure of the use of these memories for the self-functions of death preparation, identity, and problem solving, and the social functions of conversation and teach/inform, and a measure of psychological well-being. Memories were also coded for whether or not they contained a redemptive narrative structure (from emotionally negative to emotionally positive). Results showed that the endorsement of reminiscence functions did differ by memory type, with high points more often endorsed for the functions of identity, teach/inform, and conversation than low points. These main effects were qualified by memory type × age interactions. The use of these functions for each kind of memory was also related to well-being, but differentially for older and younger people, and redemptive sequencing was especially important to the well-being of the younger group. Findings are discussed in terms of the importance of different emotional memories for self and well-being at different points in the lifespan.     

Odor preference learning and memory modify GluA1 phosphorylation and GluA1 distribution in the neonate rat olfactory bulb: testing the AMPA receptor hypothesis in an appetitive learning model

An increase in synaptic AMPA receptors is hypothesized to mediate learning and memory. AMPA receptor increases have been reported in aversive learning models, although it is not clear if they are seen with memory maintenance. Here we examine AMPA receptor changes in a cAMP/PKA/CREB-dependent appetitive learning model: odor preference learning in the neonate rat. Rat pups were given a single pairing of peppermint and 2 mg/kg isoproterenol, which produces a 24-h, but not a 48-h, peppermint preference in the 7-d-old rat pup. GluA1 PKA-dependent phosphorylation peaked 10 min after the 10-min training trial and returned to baseline within 90 min. At 24 h, GluA1 subunits did not change overall but were significantly increased in synaptoneurosomes, consistent with increased membrane insertion. Immunohistochemistry revealed a significant increase in GluA1 subunits in olfactory bulb glomeruli, the targets of olfactory nerve axons. Glomerular increases were seen at 3 and 24 h after odor exposure in trained pups, but not in control pups. GluA1 increases were not seen as early as 10 min after training and were no longer observed 48 h after training when odor preference is no longer expressed behaviorally. Thus, the pattern of increased GluA1 membrane expression closely follows the memory timeline. Further, blocking GluA1 insertion using an interference peptide derived from the carboxyl tail of the GluA1 subunit inhibited 24 h odor preference memory providing causative support for our hypothesis. PKA-mediated GluA1 phosphorylation and later GluA1 insertion could, conjointly, provide increased AMPA function to support both short-term and long-term appetitive memory.