Transfer of the partial reinforcement extinction effect between escape (shock) and appetitive (food) conditioning

In the first experiment rats were given partial reinforcement or continuous reinforcement in either an escape or an appetitive paradigm. Subsequently, the rats received continuous reinforcement training under motivational conditions opposite those experienced earlier. Finally, responses were extinguished according to the motivational conditions experienced in the second phase. The results indicated that partial reinforcement in the initial phase operated to increase resistance to extinction in the last. In a second experiment this intermotivational partial reinforcement extinction effect was shown to survive interpolated experiences with extinction, a 1-week rest period, and continuous reinforcement reacquisition. A third experiment examined the influence of intramodal versus intermodal nonreinforcement-reinforcement sequences on the intermotivational partial reinforcement extinction effect. Interactive effects between similarity of aversive outcome (escape nonreinforcement, appetitive nonreinforcement) and reinforcement type (negative, positive) were found. The theoretical implications of the data from all three experiments are discussed.     

Stimulus control of defensive burying in the rat

Rats shocked once through a wire-wrapped stationary prod mounted on the wall of a test chamber incorporated the bedding material covering the chamber floor into a defensive reaction. When tested 1 min later, they approached the prod and buried it. Evidence was provided by three separate studies of this burying response that rats had learned about the association of both the position and brightness of the prod with shock after this single conditioning trial. In Experiment 1, the amount of burying decreased if either the position or brightness of the prod had been changed prior to the test. In Experiments 2 and 3, rats were shocked through one of two prods (white or black) mounted on opposite walls of the test chamber. When the positions of the prods were unchanged for the test, almost every subject buried the prod through which it had been shocked, even when the conditioning-test interval was 24 hr; whereas, each rat directed substantial amounts of bedding material at both prods when the positions of the two prods were reversed. Thus, discriminated “avoidance” learning can be rapid, reliable, and enduring when shock is administered “by” a clearly defined stimulus object, i.e., when cue and consequence are spatially contiguous.     

Partial reinforcement and autoshaping of the pigeon's key-peck behavior

Pigeons were exposed to continuous and partial reinforcement (25%) schedules in an autoshaping procedure. The number of trials and/or pairings per session were equated across two factorial group sets and all groups were trained for a fixed total number of acquisition trials (192). When acquisition was analyzed as a function of reinforcements delivered, the groups receiving fewer number of trials per session acquired the response faster, independently of the percentage of reinforced trials. Moreover, the number of reinforcements to satisfy an acquisition criterion was a monotonic function of the number of trials per session but not of the schedule. The results are discussed in relation to the neocontinuity and the scalar expectancy theories.     

Academic and Social Integration on Campus Among Sexual Minority Students: The Impacts of Psychological and Experiential Campus Climate

A heterosexist campus climate can increase risk for mental health problems for sexual minority students; however, the relationship between campus climate for sexual minorities and academic outcomes remains understudied. Using a sample of sexual minority respondents extracted from a campus climate survey conducted at a large university in the Midwest, we examine relationships between multiple dimensions of psychological and experiential campus climate for sexual minorities with academic integration (academic disengagement, grade‐point average [GPA]) and social integration (institutional satisfaction, acceptance on campus). We also investigate the protective role of engagement with informal academic and peer‐group systems. Findings suggest campus climate affects sexual minority students’ integration. In multivariate analyses, perceptions of whether lesbian, gay, and bisexual (LGB) people could be open about their sexual identity was positively associated with acceptance on campus; personal heterosexist harassment was positively associated with academic disengagement and negatively with GPA. Students’ informal academic integration (instructor relations) and informal social integration (LGB friends) demonstrated influential main effects but did not moderate any of the climate‐outcome relationships. Researchers should further explore the relationships between climate and academic outcomes among sexual minority students, both collectively and among specific sub‐groups, and address the role of other protective factors.     

Identifying marks of Latin American psychoanalysis Towards the defi nition of a River Plate model1

The author considers the infl uences that different psychoanalytic trends have had on the thought processes of psychoanalysts in the River Plate region. She begins by giving a history of the way in which these trends were shaped by the sociocultural context of the region, and of how the dialectical relationship between these two factors produced the River Plate region's (Argentina and Uruguay) own theoretical model. The author includes a study‐albeit incomplete‐of major local developments, and attempts to defi ne the characteristics of a regional model. The model is based on the following parameters: the fundamental rules of evenly suspended attention and free association; the technical frame; links between theory and clinical practice such as transference‐countertransference, resistance, identifi cation, the analytic fi eld; the concept of psychic change and its indicators; and the interpretive instrument. The author considers the past and present infl uence of Lacanian thought on this model. She concludes by reviewing some of these theoretical and clinical concepts.     

Contextual facilitation in children's oral reading in relation to grade and decoding skill

This research investigated children's use of context to facilitate word recognition and comprehension-monitoring processes in the oral reading of connected prose as a function of grade level and decoding skill. Results indicated no overall contextual facilitation of word recognition accuracy, even in less skilled decoders, although there was evidence that less skilled decoders were assisted by context in decoding some content words. Children read word lists 50% more slowly than comparable selections of prose. The adoption of different and compensatory reading speed strategies in children's reading of prose and word lists renders the oral reading task an insensitive test of the contextual facilitation of word recognition accuracy. A qualitative analysis of the errors made in reading the prose passage showed that skilled decoders made (relative to less skilled decoders) a lower proportion of reading errors which, as first uttered, violated prior context, and a higher rate of contextually obligatory self-corrections, thus making a higher overall rate of contextually acceptable oral reading errors. These data were interpreted as suggesting that children's oral reading incorporates processing that occurs after lexical access, and that skilled decoders use context more effectively to monitor comprehension. In an oral reading task, this may counteract the tendency of less skilled decoders to rely more on context in the process of word recognition.     

Cognitive and motivational determinants of children's humor responses

Cognitive and motivational influences on children's humor responses were examined. Forty-eight Caucasian children from three economically heterogeneous schools were tested. Equal numbers of middle SES and lower SES boys and girls from kindergarten and third grade were shown 12 aggression and dependency cartoons of different difficulty levels. Three responses to each cartoon were recorded: mirth, funniness rating, and comprehension score. Results support aspects of both psychodynamic and cognitive theories of humor response. All children preferred aggressive themes to dependency themes, and third graders especially showed attenuated response to dependency cartoons. Funniness ratings decreased as difficulty levels increased. IQ, as assessed by the Peabody Picture Vocabulary Test-R, was positively related to humor. Mirth responses and funniness ratings increased as comprehension increased.     

Adaptation to work: An analysis of employee health, withdrawal, and change

J. Rosse and H. Miller (1984, in P. Goodman, R. Atkin et al., Absenteeism: New Approaches to understanding, measuring, and managing employee absence. San Francisco: Jossey-Bass) have proposed a model of employee adaptation that hypothesizes multiple withdrawal behaviors and attempts to change working conditions as alternative forms of adaptation to a dissatisfying work environment. Negative health outcomes are also hypothesized consequences of dissatisfaction with work. In this longitudinal study of 42 new hospital employees, intention to quit, turnover, absence, attempts to change the job, and heatlh disorders were negatively correlated with job satisfaction; lateness and self-report avoidance scale were not. Use of adaptive behaviors was also found to have remedial effects for employee health. Implications for a general model of adaptation are discussed.