Does ease to block a ball affect perceived ball speed? Examination of alternative hypotheses

According to an action-specific account of perception, the perceived speed of a ball can be a function of the ease to block the ball. Balls that are easier to stop look like they are moving slower than balls that are more difficult to stop. This was recently demonstrated with a modified version of the classic computer game Pong (Witt & Sugovic, 2010). However, alternative explanations can also explain these results without resorting to nonoptical effects on perception. To examine whether blocking ease influences perception, we conducted several experiments. We examined whether the apparent effects were due to the type of perceptual judgment, the timing of the judgment, and the effectiveness of the paddle. The results are consistent with a perceptual explanation, and help build a case that blocking ease can influence perceived speed. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Mothers’ Gender-Role Attitudes and Their Responses to Young Children’s Hypothetical Display of Shy and Aggressive Behaviors

The purpose of this study was to investigate the role of child gender and maternal gender-role attitudes in mothers’ reactions to hypothetical vignettes depicting their preschool-aged child displaying aggressive and shy behaviors. Participants were 78 mothers of preschool-aged children (43 girls, 35 boys; M _age?=?47.44?months, SD?=?11.00) living in a mid-sized city in Ontario, Canada. Mothers provided reports of their gender-role attitudes and rated their expectancies and emotional/behavioral reactions following hypothetical vignettes depicting their child displaying physically aggressive and shy-withdrawn behaviors. It was hypothesized that mothers would respond with more negative (and less positive) emotions and expectancies in response to children’s gender-incongruent problem behaviors (i.e., shyness among boys, aggression among girls). It was further hypothesized that these gender effects would be more pronounced among mothers espousing more traditional (i.e., less egalitarian) gender-role attitudes. Results of multiple regression analyses indicated that mothers anticipated more negative consequences to aggression among boys than among girls. Several significant interaction effects also emerged between child gender and maternal gender-role attitudes, particularly with regards to children’s shyness. Among mothers of boys, a more egalitarian gender-role attitude was associated with greater anticipated benefits of shyness, and both more positive and more negative emotional responses to shyness. For mothers of girls, however, the opposite pattern emerged. Results provide some support for the notion that mothers may enforce gender-typical social behaviors in their children, particularly if they themselves hold more traditional gender-role attitudes.     

The Relationship Between Personality Organization as Assessed by Theory-Driven Profiles of the Dutch Short Form of the MMPI and Self-Reported Features of Personality Organization

Research on and with the Rosenzweig Picture-Frustration (P-F) Study and its precursors, 1934-1974, is presented. Investigations with the original versions of the P-F in English and the parallel, standardized versions in Europe. Asia and the Americas are covered. More than 500 articles and books are organized by topic in a Citation Index giving authors and dates. The available references for a given topic can then be readily located. The major topics include basic (construct) research, reliability, validity and pragmatic applications. These applications pertain to developmental and individual differences, clinical disorders, antisocial behavior, personnel selection, counseling and therapy, educational and school psychology, cultural and differences, and experimental psychodynamics.     

A perceiver’s own abilities influence perception,even when observing others

Perceptual judgments of objects, such as judgments of their size, distance, and speed, are influenced by the perceiver’s ability to act on these objects. For example, objects that are easier to block appear to be moving slower than objects that are more difficult to block. These effects are known as action-specific effects. Recent research has found similar patterns when a person observes someone else act: When the other person’s task is more difficult, objects look farther away and faster to the observer, whereas when the other person’s task is easier, the objects look closer and slower to the observer. These previous findings that another person’s ability penetrates into perceptual judgments challenge the idea that action-specific effects are specific to the perceiver’s own abilities. However, in the present study, we show that the apparent effects of another person’s ability on the observer’s judgments are actually due to the observer’s own abilities as if he or she was in the other person’s situation. This implicates a type of self-projection motor simulation mechanism. The results also preserve the critical idea that action-specific effects are perceiver specific and, consequently, that they could be adaptive for planning future actions.     

Parlance,Places, Process,and Paradox: Revisiting the Discussion of Gender Differences in Childhood Shyness

In our recent review article (Doey et al. 2013), we provided an overview and synthesis of the extant literature pertaining to gender differences in the prevalence and implications of childhood shyness. In response to this review, Sex Roles solicited three commentaries from noted experts in the field. This rebuttal is meant to briefly address some of the central themes raised in these commentaries. Our comments focus on the issues of parlance i.e., nomenclature, operationalization, and assessment, places (i.e., the importance of considering context), process (i.e., mechanisms that may underlie gender differences in shyness), and paradox (comparing gender differences in the prevalence of shyness versus internalizing problems).     

The female stalker

A study of 143 female stalkers was conducted, part of a large North American sample of stalkers (N=1005) gathered from law enforcement, prosecutorial, and entertainment corporate security files (Mohandie, Meloy, Green McGowan, & Williams, 2006). The typical female stalker was a single, separated, or divorced woman in her mid-30s with a psychiatric diagnosis, most often a mood disorder. She was more likely to pursue a male acquaintance, stranger, or celebrity, rather than a prior sexual intimate. When compared with male stalkers, the female stalkers had significantly less frequent criminal histories, and were significantly less threatening and violent. Their pursuit behavior was less proximity based, and their communications were more benign than those of the males. The average duration of stalking was 17 months, but the modal duration was two months. Stalking recidivism was 50%, with modal time between intervention and re-contacting the victim of one day. Any prior actual relationship (sexual intimate or acquaintance) significantly increased the frequency of threats and violence with large effect sizes for the entire female sample. The most dangerous subgroup was the prior sexually intimate stalkers, of whom the majority both threatened and were physically violent. The least dangerous were the female stalkers of Hollywood celebrities. Two of the McEwan, Mullen, MacKenzie, and Ogloff (2009b) predictor variables for stalking violence among men were externally validated with moderate effect sizes for the women: threats were associated with increased risk of violence, and letter writing was associated with decreased risk of violence.     

How does familiarity with a voice affect trait judgements?

From only a single spoken word, listeners can form a wealth of first impressions of a person’s character traits and personality based on their voice. However, due to the substantial within-person variability in voices, these trait judgements are likely to be highly stimulus-dependent for unfamiliar voices: The same person may sound very trustworthy in one recording but less trustworthy in another. How trait judgements differ when listeners are familiar with a voice is unclear: Are listeners who are familiar with the voices as susceptible to the effects of within-person variability? Does the semantic knowledge listeners have about a familiar person influence their judgements? In the current study, we tested the effect of familiarity on listeners’ trait judgements from variable voices across 3 experiments. Using a between-subjects design, we contrasted trait judgements by listeners who were familiar with a set of voices – either through laboratory-based training or through watching a TV show – with listeners who were unfamiliar with the voices. We predicted that familiarity with the voices would reduce variability in trait judgements for variable voice recordings from the same identity (cf. Mileva, Kramer & Burton, Perception, 48, 471 and 2019, for faces). However, across the 3 studies and two types of measures to assess variability, we found no compelling evidence to suggest that trait impressions were systematically affected by familiarity.     

Portfolio Selection from Multiple Benchmarks: A Goal Programming Approach to an Actual Case

This paper deals with benchmark‐based portfolio choice for buy‐and‐hold strategies of investing. Multiple benchmarks for returns are considered, which is more realistic than taking a unique benchmark – a unique aspiration difficult to select in practice among the various aspirations for returns that the investor has in mind. Portfolio selection with multiple benchmarks leads to a multi‐objective problem, which is addressed by mean value – stochastic goal programming. In particular, two benchmarks are considered, which involves two goals. Weights for goals depend on investor's preferences and Arrow's absolute risk aversion coefficients. An efficient frontier of portfolios is obtained. Advantages of this stochastic method in our context are as follows: (i) Mean value‐stochastic goal programming relies on classical utility theory under uncertainty and Arrow's absolute risk aversion, which ensures soundness and strictness, and (ii) the numerical model is easily solved by using available software such as mean–variance software. Numerical results are tabulated and discussed. Copyright © 2011 John Wiley & Sons, Ltd.