Variability in gustatory quality identification

A total of 60 male and 60 female non-smoking undergraduates were tested on two gustatory screening tasks in which solutions representing the four basic taste qualities were used. The solution concentrations chosen were low, but supposedly distinct as to their qualities. Only 16% of the males were able to identify all solutions correctly, i.e., to a criterion of 4 correct out of 7 presentations, as compared to 34% of the females. A further 28% of the males consistently confused the sour and bitter qualities as did 10% of the females. A correction procedure used in one part of the experiment did not prevent this confusion. We suggest that the sour-bitter confusion may be the gustatory analogue of abnormal color vision.     

Menarche: A crossroads that previews developmental change

In recent years the developmental implications of menarche have garnered particular attention. Investigators have determined that this developmental event tends to affect three significant domains of the adolescent girl's function: psychological status, relationships with peers, and role in the family. This paper explores these issues and introduces a new technique, referred to as previewing, that may help the teenage girl acclimate to the status of sexual maturity. Derived from the early life interactions of caregiver and infant, previewing promotes representational skills and enhances self-esteem as the adolescent confronts developmental challenges.     

Effects of Eyewitness Evidence on Plea-Bargain Decisions by Prosecutors and Defense Attorneys1

The present experiment tested the relative impact of two types of eyewitness evidence (identification and non identification) on plea-bargain decisions by prosecutors and defense attorneys. A hypothetical case involving a robbery was mailed to three prosecutors and three defense attorneys in each of 47 states. The subjects were randomly assigned to receive a case in which an eyewitness claimed: (a) the defendant was the criminal (identification), (b) the defendant was not the criminal (non identification), or (c) it was not possible to tell whether the defendant was the criminal (control). Similar to findings with jurors, both prosecutors and defense attorneys underutilized the non identification information in making their plea-bargain decisions. In the case of the prosecutors, there was evidence that the underutilization of eyewitness non identification was at least partially mediated by the prosecutors' predictions of juror reaction to the evidence.     

Evaluating the decay gradient for collinearity bias with lateral displacement from the axis of induction

The misperception of alignment which is found in many geometric illusions can be quantified using relatively simple stimulus configurations. Perceived collinearity of one segment (designated as the test segment) is biased by a second segment (designated as the induction segment), with the size of effect being a function of the relative angle between the two segments. The process can be described as angular induction. The strength of bias is greatest when the induction segment is centered at the tip of the test segment. Tong and Weintraub have reported that lateral displacement from the tip, i.e., at right angles to the axis of the induction segment, produces a sharp drop in the strength of effect. This decline is described as a decay gradient for the angular induction. One experiment replicates and provides better quantification of this decay gradient. Two other experiments examine the decay gradient using a pair of induction segments, one on each side of the tip of the test segment. Displacement of the segments (either in the same direction or in opposite directions) produces substantially the same gradient of effect. Therefore, previous evidence of tandem boosting of effect for segment pairs does not depend on collinearity among the stimulus components. Finally, a fourth experiment finds that an induction segment which is at a fixed position and orientation differentially affects the influence of a variable induction segment. At some angles the influence of the variable segment is augmented, and at others it is suppressed. These findings are discussed in a neuroreductionist context, and a simple model for angular induction is presented.     

NEEDED:

Abstract— The significance test as currently used is a disaster Whereas most researchers falsely believe that the significance test has an error rate of 5%, empirical studies show the average error rate across psychology is 60%—12 times higher than researchers think it to be The error rate for inference using the significance test is greater than the error rate using a coin toss to replace the empirical study. The significance test has devastated the research review process. Comprehensive reviews cite conflicting results on almost every issue. Yet quantitatively accurate review of the same results shows that the apparent conflicts stem almost entirely from the high error rate for the significance test. If 60% of studies falsely interpret their primary results, then reviewers who base their reviews on the interpreted study "findings" will have a 100% error rate in concluding that there is conflict between study results.     

Session helpfulness and session evaluation in short‐term counselling

The relationship between perceived session helpfulness and session evaluation was examined in 11 dyads during eight sessions of short‐term counselling. Results based on the Session Evaluation Questionnaire (Stiles, 1980) showed that, for clients, while depth, arousal, and positivity correlated with perceived session helpfulness, only depth and positivity entered a stepwise regression, yielding a multiple correlation of 0.76. For counsellors, while depth and positivity correlated with session perceived helpfulness, only depth entered the stepwise regression analysis, with a correlation of 0.70. Session depth also consistently correlated with change in perceptions of helpfulness from one session to another. Clients had higher depth scores for sessions that both participants rated as helpful. They had lower depth scores for sessions rated as less helpful by both participants or for sessions where participants disagreed in their helpfulness ratings. The centrality of counselling depth in affecting experiences of counselling helpfulness is discussed.