Magnitude comparison revisited: An alternative approach to binary choice under uncertainty

Two generations of psychologists have been interested in understanding binary choice under uncertainty. In the 1970s and 1980s, researchers assumed that people rely on a two-stage magnitude comparison process to make these decisions (Banks, 1977; Moyer & Dumais, 1978). More recently, the focus has shifted to approaches that rely on probabilistic cues and simple heuristics (Gigerenzer & Goldstein, Psychological Review 103, 650-669, 1996). Here, we test competing predictions derived from these two very different approaches and conclude that the magnitude comparison process plays a central role in this task. In support of this conclusion, we present an experiment in which participants were timed as they decided which of two vehicles was more expensive. Pairs composed of one luxury vehicle (e.g., BMW 323i) and one nonluxury vehicle (e.g., Toyota 4Runner) were critical because the magnitude comparison approach correctly predicted that reaction times would decrease with subjective distance, whereas the heuristics approach incorrectly predicted that there would be no relation.     

A Model for Communication Skills Group Using Structured Exercises and Audiovisual Equipment

Long-term psychiatric patients who are transitioning out of the hospital often lack the social skills necessary to adapt to work and leisure situations. The behaviors that are appropriate in a hospital environment are radically different from behaviors expected in the community. This paper describes a short-term, 12-session, audio-visual group developed for an inpatient psychiatric population. The group's purpose is to provide a laboratory for members to look at their interactional styles and to develop improved social skills. Focused feedback and videotaped exercises allow group members to do this within a supportive atmosphere. The tasks introduced are designed to coincide with the developmental states of the short-term group. As the sessions proceeded, we utilized sequential exercises that would help members to feel safe, to problem solve as a group, and to practice communication skills.     

Negative intergroup contact makes group memberships salient: explaining why intergroup conflict endures

Drawing from the intergroup contact model and self-categorization theory, the authors advanced the novel hypothesis of a valence-salience effect, whereby negative contact causes higher category salience than positive contact. As predicted, in a laboratory experiment of interethnic contact, White Australians (N = 49) made more frequent and earlier reference to ethnicity when describing their ethnic contact partner if she had displayed negative (vs. positive, neutral) nonverbal behavior. In a two-wave experimental study of retrieved intergenerational contact, American young adults (N = 240) reported age to be more salient during negative (vs. positive) contact and negative contact predicted increased episodic and chronic category salience over time. Some evidence for the reverse salience-valence effect was also found. Because category salience facilitates contact generalization, these results suggest that intergroup contact is potentially biased toward worsening intergroup relations; further implications for theory and policy making are discussed.     

The distribution of early childhood memories

The quantitative distribution of autobiographical memories for the first decade of life is described. The distribution, based on over 11,000 autobiographical memories from age 10 and younger from published studies, is nearly identical for males and females, for participants of different ages, and for different methods of collecting data, including using words to cue memories from anywhere in the lifespan or from just the childhood years, exhaustive listing of all early memories, and interviews.     

Measuring health status and quality of life in HIV and AIDS

Abstract

HIV can diminish quality of life profoundly, and it is important to understand and measure such effects of HIV and its treatments Although the term quality of life is commonly used, “health status” more accurately describes dimensions that are directly health related and that may be affected by traditional interventions. There is a substantial literature on general health status measurement, and several of the most established measures have been applied or adapted for use in HIV infected populations These measures include the Medical Outcomes Study health ratings, the Quality of Well-Being scale, and the Sickness Impact Profile. Cancer-specific measures such as the EORTC Quality of Life Core Questionnaire and the CARES have also been adapted. In the last three years, health status measures for HIV have been completed by several thousand patients, and have generally proved to be reliable and valid indicators of relevant clinical differences such as disease stage, numbers of symptoms, and other psychometic measures of disability and distress. Health status measures were included in a few completed clinical trials, and are being incorporated in a growing number of antiretroviral and antimicrobial studies. Health status measures provide the best way to evaluate psychosocial interventions directly aimed at improving patients' quality of life. Although challenges remain in further developing health status measures for HIV disease and in applying them, measurement of these concepts has proved to be both technically and operationally feasible. Measures of health status and quality of life can play an important role in the evaluation of clinical treatments in research studies, directing clinical treatment, assessing changes in health care delivery, and planning health care services.     

The Impact of the Testing Environment on Affective Changes Following Acute Resistance Exercise

Research has demonstrated the anxiolytic and affective changes following resistance exercise. However, several studies have allowed the participants to leave the testing facility and return at a later time to complete psychological assessments. This weakens internal validity, making it impossible to interpret findings as due to exercise per se. To address this issue, 23 male participants were randomly assigned to either a “stay” or “go” group. Within each group, all participants completed a non-exercise control session and a weight-training session based on 50% of their one repetition maximum for each of five exercises. All participants remained in the laboratory for 60 minutes following each session, at which time only those in the “go” group left the laboratory and returned at 90 and 120 minutes for their remaining affective assessments. The results indicate that despite transient disruptions in mood, an acute bout of resistance exercise results in positive psychological changes that occur within 60 minutes after completion of the exercise session and which persist up to 120 minutes post-exercise. Allowing participants to leave the laboratory or requiring them to remain in the testing environment was found to lead to different patterns of affective responses during the post-exercise assessment period. Future researchers must take into account such methodological issues when designing acute exercise studies requiring extended periods of post-exercise assessment.     

Using movement and intentions to understand human activity

During perception, people segment continuous activity into discrete events. They do so in part by monitoring changes in features of an ongoing activity. Characterizing these features is important for theories of event perception and may be helpful for designing information systems. The three experiments reported here asked whether the body movements of an actor predict when viewers will perceive event boundaries. Body movements were recorded using a magnetic motion tracking system and compared with viewers’ segmentation of his activity into events. Changes in movement features were strongly associated with segmentation. This was more true for fine-grained than for coarse-grained boundaries, and was strengthened when the stimulus displays were reduced from live-action movies to simplified animations. These results suggest that movement variables play an important role in the process of segmenting activity into meaningful events, and that the influence of movement on segmentation depends on the availability of other information sources.     

Reactions to Different Types of Forced Distribution Performance Evaluation Systems

Purpose  We isolate and describe four key elements that distinguish different forms of forced distribution systems (FDS). These key elements are the consequences for low performers, differentiation of rewards for top performers, frequency of feedback, and comparison group size. We examine how these elements influence respondents’ attraction to FDS. Design/methodology/approach  Undergraduate students (n = 163) completed a policy capturing study designed to determine how these four FDS elements influence their attraction to FDS. We examine the relative importance of these elements that most influence attraction to different FDS, as well as individual attributes (i.e., cognitive ability, gender, and major) that may affect those preferences. Findings  Respondents were most attracted to systems with less stringent treatment of low performers, high differentiation of rewards, frequent feedback and large comparison groups. Consequences for low performers were nearly twice as influential as any other element. Respondents with higher cognitive ability favored high reward differentiation and males were less affected by stringent consequences for low performers. Implications  Before practitioners implement FDS, it would be prudent to consider all four elements examined in this study—with the treatment of low performers being the most salient issue. Future accounts of FDS should clarify the nature of these elements when reporting on FDS. Such precision will be useful in generating a knowledge base on FDS. Originality/value   We add precision to the discussion of FDS by identifying four key elements. This is one of the first studies to examine perceptions of FDS from a ratee perspective.

Winnicott's splitting headache: considering the gap between Jungian and object relations concepts

This paper examines some difficulties inherent in the process of integration of potentially divergent theoretical positions. It is noted that there is an increasing tendency toward integration of Jungian theory with various models from psychoanalysis and other scientific disciplines. This trend can be understood as relating to the larger post-modern current operating in the scientific and cultural communities. As an element of the Zeitgeist, theory integration can proceed with a lack of critical stance on the process itself. An argument is developed on theoretical grounds for urging caution in the implementation of theory integration. The integrative process is examined using dream material from D. W. Winnicott in conjunction with his review of Memories, Dreams, Reflections. Through this discussion, some implications are examined as to the viability of linking Jungian and developmental models.