North is up(hill): Route planning heuristics in real-world environments

Navigators use both external cues and internal heuristics to help them plan efficient routes through environments. In six experiments, we discover and seek the origin of a novel heuristic that causes participants to preferentially choose southern rather than northern routes during map-based route planning. Experiment 1 demonstrates that participants who are tasked to choose between two equal-length routes, one going generally north and one south, show reliable decision preferences toward the southern option. Experiment 2 demonstrates that participants produce a southern preference only when instructed to adopt egocentric rather than allocentric perspectives during route planning. In Experiments 3-5, we examined participants’ judgments of route characteristics and found that judgments of route length and preferences for upper relative to lower path options do not contribute to the southern route preference. Rather, the southern route preference appears to be a result of misperceptions of increased elevation to the north (i.e., north is up). Experiment 6 further supports this finding by demonstrating that participants provide greater time estimates for north- than for equivalent south-going routes when planning travel between U.S. cities. Results are discussed with regard to predicting wayfinding behavior, the mental simulation of action, and theories of spatial cognition and navigation.     

Constructive Metatheory: II. Implications for Psychotherapy

Abstract

The implications of constructive metatheory for the conceptualization and practice of psychotherapy are briefly outlined. It is argued that the constructivist therapist construes the client as an active and developing process, and that psychological problems are approached not as piecemeal flaws or deficiencies, but as expressions of current discrepancies between an individual's adaptive capacities and the challenges she or he faces. Likewise, the process of psychotherapy is portrayed as one of trial-and-error experimentation with different (novel) ways of “being in the world.” Ideally, the client and therapist create an intimate and emotionally charged alliance in and from which the client can explore and experiment with self and world relationships. These practical features dovetail with many assertions of the major me-tatheories of psychotherapy, and it is argued that constructive metatheory may be uniauely suited to facilitating attempts at conceptual integration     

Test-Retest Properties of the Least Preferred Co-worker (LPC) Score

The test-retest properties of the Least Preferred Co-Worker (LPC) scale and two subscales were examined under two conditions: (a) a naive condition, in which respondents were uninformed as to the meaning of the scale and (b) an informed condition, in which the scale was explained to respondents between administrations. The results support the hypothesis that the test-retest stability of the total LPC score would decrease significantly when respondents understood the scale. The stability of the interpersonal subscale exhibited a decrease similar to that of the total scale score, whereas the stability of the task subscale remained constant even when the scale was explained.     

THE DIVERSITY–VALIDITY DILEMMA: OVERVIEW AND LEGAL CONTEXT

Due to racioethnic and sex subgroup differences on predictor scores in many selection procedures, it is difficult for organizations to simultaneously maximize the validity of their selection procedures and hire a diverse workforce. One response to this diversity–validity dilemma is to revise the selection procedures, an approach developed by Ployhart and Holtz (this issue, 2008) . A second possible response is to use affirmative action to increase workforce diversity, an approach developed by Kravitz (this issue, 2008) . This paper briefly presents the legal context that motivates and constrains these approaches. We begin by defining key terms, describing adverse impact, and outlining the burden of proof in adverse impact cases. We then turn to the use of racioethnic minority and female preferences, summarizing some key court decisions and the conditions under which private and public employers may use preferences.     

Missing a romantic partner: A prototype analysis

In this study, a prototype analysis of romantic missing was conducted. College‐age participants in the United States generated features of missing a partner (Study 1) and rated their centrality (Study 2). In a reaction time task, participants made category judgments for central features more quickly than for noncentral features (Study 3). In recognition and recall tasks, central features were more salient in participants’ memory, and participants evaluated individuals experiencing central features in vignettes as missing their partners more (Study 4). A prototype‐based measure of missing administered to individuals in long‐distance relationships (Study 5) correlated with commitment and attachment dimensions but only weakly with loneliness. Finally, level of missing differed based on whether individuals were in a geographically distant (vs. proximal) relationships (Study 6).     

A Comparison of Escalating Versus Fixed Reinforcement Schedules on Undergraduate Quiz Taking

Drug abstinence studies indicate that escalating reinforcement schedules maintain abstinence for longer periods than fixed reinforcement schedules. The current study evaluated whether escalating reinforcement schedules would maintain more quiz taking than fixed reinforcement schedules. During baseline and for the control group, bonus points were distributed on random days for attending class. Following baseline, students in the fixed reinforcement section received 5 bonus points for each quiz completed while students in the escalating reinforcement received 3 bonus points for the first quiz with an increase of 0 or 1 point for each consecutive quiz completed. Results indicated that the escalating reinforcement schedule maintained quiz taking significantly longer than the fixed reinforcement schedule. The control group took the fewest number of quizzes. Students with good attendance took significantly more quizzes under the escalating reinforcement schedule than students with good attendance exposed to the fixed reinforcement schedule or control condition. This study demonstrates a potential novel application for escalating reinforcement schedules. Results indicate that escalating reinforcement schedules may be successfully applied to academic settings, but more research is needed.     

Use of the dichotic listening technique with learning disabilities

Dichotic listening (DL) techniques have been used extensively as a non-invasive procedure to assess language lateralization among children with and without learning disabilities (LD), and with individuals who have other auditory system related brain disorders. Results of studies using DL have indicated that language is lateralized in children with LD and that the lateralized language asymmetries do not develop after age 6 nor are they affected by gender. Observed differences in lateralized language processes between control children and those with LD were found not due to delayed cerebral dominance, but rather to deficits in selective attention. In addition, attention factors have a greater influence on auditory processing of verbal than nonverbal stimuli for children with LD, and children with LD exhibit a general processing bias to the same hemisphere unlike control children. Furthermore, employing directed attention conditions in DL experiments has played an important role in explaining learning disabled children's performance on DL tasks. We conclude that auditory perceptual asymmetries as assessed by DL with children who experience LD are the result of the interaction of hemispheric capability and attention factors.