Features,as well as space and time,guide object persistence

What role do surface features (e.g., color) play in the establishment and maintenance of episodic representations of objects (object files)? Mitroff and Alvarez (2007) showed that stimuli that were linked by a continuous spatiotemporal history yielded object-specific preview benefits—a standard index of object files—whereas stimuli linked only by shared surface features did not. Here, it is shown that abruptly changing the features of an object that has been established on the basis of spatiotemporal history can disrupt object-specific preview benefits (Experiments 1 and 2). Moreover, under some conditions, feature match alone can give rise to the preview benefits (Experiment 3). These results indicate that surface features, as well as spatiotemporal factors, play an important role in establishing and maintaining episodic object representations.     

Effects of the build-up and resetting of auditory stream segregation on temporal discrimination

The tendency to hear a tone sequence as 2 or more streams (segregated) builds up, but a sudden change in properties can reset the percept to 1 stream (integrated). This effect has not hitherto been explored using an objective measure of streaming. Stimuli comprised a 2.0-s fixed-frequency inducer followed by a 0.6-s test sequence of alternating pure tones (3 low [L]-high [H] cycles). Listeners compared intervals for which the test sequence was either isochronous or the H tones were slightly delayed. Resetting of segregation should make identifying the anisochronous interval easier. The HL frequency separation was varied (0-12 semitones), and properties of the inducer and test sequence were set to the same or different values. Inducer properties manipulated were frequency, number of onsets (several short bursts vs. one continuous tone), tone:silence ratio (short vs. extended bursts), level, and lateralization. All differences between the inducer and the L tones reduced temporal discrimination thresholds toward those for the no-inducer case, including properties shown previously not to affect segregation greatly. Overall, it is concluded that abrupt changes in a sequence cause resetting and improve subsequent temporal discrimination.     

Clinical practice as natural laboratory for psychotherapy research: a guide to case-based time-series analysis

Both researchers and practitioners need to know more about how laboratory treatment protocols translate to real-world practice settings and how clinical innovations can be systematically tested and communicated to a skeptical scientific community. The single-case time-series study is well suited to opening a productive discourse between practice and laboratory. The appeal of case-based time-series studies, with multiple observations both before and after treatment, is that they enrich our design palette by providing the discipline another way to expand its empirical reach to practice settings and its subject matter to the contingencies of individual change. This article is a user's guide to conducting empirically respectable case-based time-series studies in a clinical practice or laboratory setting.     

Myopic biases in competitions

In three studies using both laboratory and field data, we show that the focal competitor’s strengths and weaknesses feature more prominently in predictions of the outcomes of future competitions than do the strengths and weaknesses of the opponents. People are more confident when their own side is strong, regardless of how strong the competition is. We show that this effect is driven by the fact that people have better information about their own side than the other side, in part because they preferentially seek out information about their own side. Implications for theories of decision making in competitive settings are discussed.     

Awareness of action: Inference and prediction

This study investigates whether the conscious awareness of action is based on predictive motor control processes, or on inferential "sense-making" process that occur after the action itself. We investigated whether the temporal binding between perceptual estimates of operant actions and their effects depends on the occurrence of the effect (inferential processes) or on the prediction that the effect will occur (predictive processes). By varying the probability with which a simple manual action produced an auditory effect, we showed that both the actual and the predicted occurrence of the effect played a role. When predictability of the effect of action was low, temporal binding was found only on those trials where the auditory effect occurred. In contrast, when predictability of the effect of action was high, temporal binding occurred even on trials where the action produced no effect. Further analysis showed that the predictive process is modulated by recent experience of the action-effect relation. We conclude that the experience of action depends on a dynamic combination of predictive and inferential processes.     

Distress, coping, and blogging: comparing new myspace users by their intention to blog.

New Myspace.com users (N = 134, mean age 24.5 years) completed a questionnaire about their intent to blog and several psychosocial variables. Intending bloggers scored higher on psychological distress, self-blame, and venting and scored lower on social integration and satisfaction with number of online and face-to-face friends. Intending bloggers may view this activity as a potential mechanism for coping with distress in situations in which they feel inadequately linked with social supports.     

Correlates of changes in voluntary physical activity associated with the Youth Fit For Life intervention during after-school care

Overweight in youth is increasing and physical inactivity has been implicated as a causal factor. An after-school care intervention, Youth Fit For Life, has been associated with significant improvements in physiological factors and frequency of moderate-to-vigorous physical activity voluntarily completed outside of structured settings. Correlates of the observed changes in physical activity amounts were, however, unknown. A multiple regression equation with simultaneous entry of sex, age, race, initial Body Mass Index, and initial frequency of voluntary physical activity as predictor variables for changes in physical activity was calculated on Euro-American and African-American participants ages 8 to 12 years (N=217). A statistically significant 16% of the variance in changes in frequency of voluntary physical activity over 12 wk. was accounted for, with only voluntary physical activity at baseline and age making significant, unique contributions. For participants either overweight or at risk for overweight (n=72), the changes in physical activity significantly correlated with changes in Body Mass Index. Implications of findings to maximize treatment effects on voluntary physical activity were suggested.     

Understanding the directedness of gaze: three ways of doing it

It is argued that alongside the mentalistic and the behaviouristic forms, there is a third kind of gaze understanding. Gaze may be understood to be subjective in the sense that there can be diversity across self and other in terms of what is seen, without it being understood to be representational. This form of gaze understanding is more consistent with the evidence on toddlers' understanding of gaze and may well represent a developmentally intermediate form between the behaviouristic and mentalistic forms discussed in the target article. Copyright © 2006 John Wiley & Sons, Ltd.     

Verbal Sexual Coercion and Perceived Victim Responsibility: Mediating Effects of Perceived Control

Verbal coercion involves unwanted sexual penetration compelled by psychological pressure. It was hypothesized that, to the degree that verbal coercion is seen as controllable, victims may be held more responsible. Two samples of US undergraduates rated perceptions of hypothetical sexual coercion scenarios. In Study 1, participants (N = 120) read scenarios of either verbal coercion or rape by a male dating partner. Participants perceived verbal coercion as more controllable than rape, which accounted for the greater responsibility attributed to verbal coercion victims. In Study 2, participants (N = 275) read scenarios involving either male-to-female or female-to-male verbal coercion. Participants perceived female-to-male coercion as more controllable, which accounted for the greater responsibility attributed to a verbally coerced man.