Learning to vary and varying to learn

We compared two sources of behavior variability: decreased levels of reinforcement and reinforcement contingent on variability itself. In Experiment 1, four groups of rats were reinforced for different levels of response-sequence variability: one group was reinforced for low variability, two groups were reinforced for intermediate levels, and one group was reinforced for very high variability. All of the groups experienced three different reinforcement frequencies for meeting their respective variability contingencies. Results showed that reinforcement contingencies controlled response variability more than did reinforcement frequencies. Experiment 2 showed that only those animals concurrently reinforced for high variability acquired a difficult-to-learn sequence; animals reinforced for low variability learned little or not at all. Variability was therefore controlled mainly by reinforcement contingencies, and learning increased as a function of levels of baseline variability. Knowledge of these relationships may be helpful to those who attempt to condition operant responses.     

Constraint, alcoholism, and electrodermal response in aversive classical conditioning and mismatch novelty paradigms

This study investigated whether low levels of the personality trait of constraint and early-onset alcoholism would be associated with deficits in aversive conditioning and smaller responses to novelty in a stimulus mismatch protocol. Personality traits (constraint and socialization) and skin conductance responses (SCRs) during conditioning and novelty paradigms were assessed in alcoholics (n=41) and non-alcoholics (n=32). The conditioning protocol involved measuring SCRs after conditioned stimuli (CS+: tones) paired with shock, CS− tones unpaired with shock, and CS+ probes unpaired with shock. The mismatch protocol involved measuring SCRs to auditory stimuli consisting of a series of 5 pure tones of the same pitch followed a shorter white noise stimulus (the novel stimulus). Contrary to the hypothesis, alcoholics did not differ from non-alcoholics in SCRs to CS+ probes or on the mismatch measure (SCR novel tone—SCR to 5^th tone). Higher levels of constraint and self-reports of fear during conditioning were associated with smaller responses to both the CS+ probes and the CS− tones as well as the mismatch measure within non-alcoholics, but not within alcoholics. In alcoholics, low constraint was associated with greater habituation to CS+ probes, and poor differential conditioning on measures of change across trials in SCR to CS+ probes and CS− stimuli. The results suggest that different processes influence levels of constraint in non-alcoholics and alcoholics. The data indicate that low constraint in non-alcoholics is associated with allocating fewer processing resources to potentially significant stimuli, rather than being associated with a specific deficit in aversive conditioning per se.     

Gender Differences in Video Game Characters’ Roles, Appearances, and Attire as Portrayed in Video Game Magazines

Video game characters have the potential to shape players’ perceptions of gender roles. Through social comparison processes, players learn societal expectations of appearances, behaviors and roles. Forty-nine articles were coded from current U.S. gaming magazines, resulting in 115 coded characters. This content analysis of video game magazine articles investigated how characters are portrayed, focusing on gender differences. Males were more likely to be heroes and main characters, use more weapons, have more abilities, and were more muscular and powerful. Females were more often supplemental characters, more attractive, sexy, and innocent, and also wore more revealing clothing. Understanding these video game messages is an important first step in understanding the effects games and magazines may have on behavior and attitudes.     

Understanding the “Why” as Well as the “How”: Service Performance is a Function of Prosocial Motives and Emotional Labor

Which employees tend to better perform with customers? We suggest a combination of individual differences; specifically, we consider both why employees are working (prosocial motivation) and how (emotional labor). Deep acting should enhance the positive relationship between prosocial motivation and performance, while surface acting should dampen this relationship. Using a field sample of 214 grocery clerks and supervisor ratings of interpersonal performance with customers, we did not find the amplifying effect of deep acting. We do find the dampening effect for surface acting, such that surface acting buffers those with low prosocial motives, presumably by allowing them to “act” like they want to help others. This helps to explain the weak relationship of prosocial motives with performance and suggests implications for research and practice.     

Repetition increases false recollection in older people

Aging is accompanied by an increase in false alarms on recognition tasks, and these false alarms increase with repetition in older people (but not in young people). Traditionally, this increase was thought to be due to a greater use of familiarity in older people, but it was recently pointed out that false alarms also have a clear recollection component in these people. The main objective of our study is to analyze whether the expected increase in the rate of false alarms in older people due to stimulus repetition is produced by an inadequate use of familiarity, recollection, or both processes. To do so, we carried out an associative recognition experiment using pairs of words and pairs of images (faces associated with everyday contexts), in which we analyzed whether the repetition of some of the pairs increases the rate of false alarms in older people (compared to what was found in a sample of young people), and whether this increase is due to familiarity or recollection (using a remember‐know paradigm). Our results show that the increase in false alarms in older people due to repetition is produced by false recollection, calling into question both dual and single‐process models of recognition. Also, older people falsely recollect details of never studied stimuli, a clear case of perceptual illusions. These results are better explained in terms of source‐monitoring errors, mediated by people's retrieval expectations.     

Eye Remember What Happened: Eye‐Closure Improves Recall of Events but not Face Recognition

Eye‐closure improves event recall. We investigated whether eye‐closure can also facilitate subsequent performance on lineup identification (Experiment 1) and face recognition tasks (Experiment 2). In Experiment 1, participants viewed a theft, recalled the event with eyes open or closed, mentally rehearsed the perpetrator's face with eyes open or closed, and viewed a target‐present or target‐absent lineup. Eye‐closure improved event recall, but did not significantly affect lineup identification accuracy. Experiment 2 employed a face recognition paradigm with high statistical power to permit detection of potentially small effects. Participants viewed 20 faces and were later asked to recognize the faces. Thirty seconds before the recognition task, participants either completed an unrelated distracter task (control condition), or were instructed to think about the face with their eyes open (rehearsal condition) or closed (eye‐closure condition). We found no differences between conditions in discrimination accuracy or response criterion. Potential explanations and practical implications are discussed. Copyright © 2015 John Wiley & Sons, Ltd.     

Resilience and Coping as Predictors of Well-Being in Adults

Well-being is one of the keys to successful and optimal development across the lifespan. Based on the idea that development involves changes in individuals’ adaptive capacity to meet their needs over time, the changes that occur in the second half of life require effort to adapt to the new reality. This study used a structural model to test the effects of coping strategies and resilience on well-being in a sample of 305 mid-life adults. Several constructs were measured: coping strategies, resilience, and well-being. A final model was obtained with good fit indices; psychological well-being was positively predicted by resilience and negatively by emotional coping. Moreover, positive reappraisal and avoidance form part of both coping strategies (problem-focused and emotion-focused). Considering the characteristics of the model, educational intervention programs could be developed to promote skills that favor good adaptation at this stage in the life cycle and contribute to promoting successful aging.