False reports of childhood events in appropriate interviews

The present study employed the “parental misinformation & CloseCurly ” paradigm to examine whether individuals report false events from their childhood even when they are interviewed in an appropriate manner by a trained interviewer. Each participant was interviewed on three occasions. By the final interview, one participant produced a “full & Close Curly ” report, and six participants produced “partial & Close Curly ” reports, of childhood events that did not occur. Although participants reported perceiving greater pressure to report the false events than the real events, independent judges' ratings of social pressure in the interviews did not differ as a function of what type of event participants were being asked about. Participants also reported higher confidence in their parents', compared to their own, recall of events from their childhood. False reports were also positively correlated with scores on both the full and the revised versions of the Dissociative Experiences Scale, and negatively correlated with score on the Self-Monitoring scale. These results indicate that, despite being interviewed in an appropriate manner by a trained interviewer, some participants will falsely report events from their childhoods.     

Effects of incubation and imagery training on creativity

One hundred five business school students were given anagram and open‐ended ideational tasks under one of several conditions. One group of students received an incubation interval prior to problem solving. A second group received no such interval. A third group received imagery training to aid problem solving in addition to an incubation interval. A fourth group received imagery training but no incubation interval. The fifth and sixth groups received imagery training, incubation or no incubation, respectively, and deliberate instructions to use imagery in problem solving. Results showed significant effects for incubation on originality of ideas and imagery training on anagram solving, but the latter were inhibitory. Results are discussed in terms of incubation and imagery theories.     

A probabilistic account of exemplar and category generation

People are capable of imagining and generating new category exemplars and categories. This ability has not been addressed by previous models of categorization, most of which focus on classifying category exemplars rather than generating them. We develop a formal account of exemplar and category generation which proposes that category knowledge is represented by probability distributions over exemplars and categories, and that new exemplars and categories are generated by sampling from these distributions. This sampling account of generation is evaluated in two pairs of behavioral experiments. In the first pair of experiments, participants were asked to generate novel exemplars of a category. In the second pair of experiments, participants were asked to generate a novel category after observing exemplars from several related categories. The results suggest that generation is influenced by both structural and distributional properties of the observed categories, and we argue that our data are better explained by the sampling account than by several alternative approaches.     

Punishing the innocent — unintentionally

The intentional punishment of the innocent is ordinarily claimed to be a special problem for utilitarian theories of punishment. The unintentional punishment of the innocent is a problem for any theory of punishment which holds that the guilty should be punished. This paper examines the criteria that are relevant to a determination of the appropriate probability of punishment mistakes for a society, and argues that this is the kind of moral problem for which utilitarian judgments, as opposed to considerations of justice, are most appropriate. To illustrate some of the trade‐offs involved, the paper employs some hypothetical data.     

The Big Five Personality Factors and Mass Politics

In this paper, we argue that a stable set of characteristics—personality—can help explain mass political opinions and behavior. By analyzing data collected from over 750 people, we examine the influence of the Five‐Factor Model of personality on ideology, partisanship, political efficacy, and two forms of political participation. After controlling for a host of demographic factors, we find that openness to experience, agreeableness, conscientiousness, and extraversion help explain public opinion and political behavior. Neuroticism is the only factor that does not influence political life. We conclude by comparing these results to other findings in the field and suggest directions for future research.     

Delay of Gratification and Locus of Control as Predictors of Organizational Satisfaction and Commitment: Sex Differences

The relationships of two personality measures—locus of control and delay of gratification—with organizational satisfaction and commitment were investigated. Results indicated that orientation to delay reinforcement was positively related to commitment and satisfaction. Confirming previous findings, internality in locus of control was also positively related to the organizational constructs. However, results of analyses of sex differences and interactions between locus of control and delay of gratification in predicting satisfaction and commitment suggest that the relationships of locus of control with the organizational constructs are less simple than previously thought.     

Age-Related Changes in Grip Force and Dynamics of Hand Movement

The authors investigated whether older adults (n = 16; mean age = 65 years) increased grip force to compensate for load force fluctuations during up and down movements more than young adults did (n = 16; mean age = 24 years) and whether older and young adults exhibited similar adaptation of grip force to alterations in friction associated with changes in object surface texture. As previously reported, older adults used a higher level of grip force than young adults during static holding. Increased grip force was observed in the older group during movement. The increase was appropriate to the lower coefficient of friction estimated for the older group. In both groups, grip force was greater with a smooth than with a rough surface (the latter having the higher coefficient of friction) during static holding and during movement. Moreover, grip force modulation was equally well synchronized with load force fluctuation during movement in the two groups. The authors concluded that changes in organization of grip force with age are well adapted to change in hand-object interface properties. Elevated grip force in older adults does not necessarily signify a fundamental change in synchronizing grip force modulation with load force fluctuation.     

Bimanual and Unimanual Convergent Goal-Directed Movement Times

Three experiments are reported, investigating the effects of using 1 or 2 hands when making convergent low index of difficulty (ID) and visually controlled movements (2 hands meeting together). The experiments involved movements in four different cases—a probe held in the right hand and moved to a target held in the stationary left hand, vice versa of this arrangement, both hands moving with the probe in the right hand and target in the left hand, and vice-versa of this arrangement. Experiments were the standard Fitts’ paradigm, moving a pin into a hole and a low-ID task. In Fitts’ task, 2-hand movements were faster than 1 hand only at higher IDs; this was also the case in the pin-to-hole transfer task and the movement times were lower when the pin was held in the preferred hand. Movements made with low ID showed a small effect of 1- or 2-handed movements, with the effective amplitude of the movement being reduced by about 20% when 2 hands were used.     

A Direct Study of Halo Effect

Five individuals were evaluated on a 7-point scale from strongly dislike (1) to strongly like (7). A week later the same people were rated on 16 relatively distinct traits, such as carefulness, sense of humor, fairness, and sociability. For three of the rated individuals, there were no extreme ratings on the general impression (liking) scale by raters, and the correlations between those scores and mean trait ratings were .26, .32, and .36. For the other two, there were sharp and extreme ratings on the general liking scale, and correlations between those scores and mean trait ratings were .60 and .76. This method provides a more appropriate and more meaningful index of halo effect than other methods because it is based more directly on Thorndike's (1920) original concept.