Icon flickering, flicker rate, and color combinations of an icon's symbol/background in visual search performance

The effects of color combinations of an icon's symbol/background and components of flicker and flicker rate on visual search performance on a liquid crystal display screen were investigated with 39 subjects who searched for a target icon in a circular stimulus array (diameter = 20 cm) including one target and 19 distractors. Analysis showed that the icon's symbol/background color significantly affected search time. The search times for icons with black/red and white/blue were significantly shorter than for white/yellow, black/yellow, and black/blue. Flickering of different components of the icon significantly affected the search time. Search time for an icon's border flickering was shorter than for an icon symbol flickering; search for flicker rates of 3 and 5 Hz was shorter than that for 1 Hz. For icon's symbol/background color combinations, search error rate for black/blue was greater than for black/red and white/blue combinations, and the error rate for an icon's border flickering was lower than for an icon's symbol flickering. Interactions affected search time and error rate. Results are applicable to design of graphic user interfaces.     

A review of research methods in IO/OB work-family research

A methodological review was conducted of work-family (WF) research published in industrial-organizational psychology and organizational behavior journals over a period of 24 years (1980-2003). Content analysis was conducted on 225 individual studies published in 210 articles to categorize methodological features, including the research design, sources of data used, data analysis techniques, reliability and validity of measures used, and sociodemographic characteristics of the samples. Results support many of the criticisms of WF research and suggest that scholars publishing WF research in industrial-organizational psychology and organizational behavior journals could make greater use of longitudinal and experimental research designs, gather more multisource data, and move beyond the individual level of analysis. Adopting more diverse conceptualizations of family, including a greater proportion of racial and ethnic minorities, and studying workers in occupations other than managerial or professional positions also appear warranted. Finally, methodological trends varied across specific WF content areas, which suggests that distinct methodologies might be useful to advance knowledge of specific WF topics.     

Use of pirated compact discs on four college campuses: a perspective from theory of planned behavior

The Theory of Planned Behavior was chosen as the framework, assuming that college students are rational decision makers seeking to maximize economic gains in purchasing compact discs. A questionnaire was given to 450 students from four college campuses in the Kaohsiung area of Taiwan. Analyses showed that the more positively rated the Behavioral Intention toward purchasing pirated music compact discs, the more likely the college students were to purchase them. Conversely, when Subjective Norms and Perceived Behavioral Control were higher, college students were less likely to make a purchase. Therefore, buying pirated compact discs was consistent with the premises for Attitude, Subjective Norms, and Behavioral Control.     

Does Information That a Suicide Victim Was Psychiatrically Disturbed Reduce the Likelihood of Contagion?1

For example, psychological disturbance is stigmatizing, so knowledge that the suicide victim was psychiatrically disturbed may decrease the possibility that others will imitate the act. To assess this possibility, 306 undergraduate volunteers read a fictitious newspaper article about a 16-year-old high school sophomore, Pat, who committed suicide. There were 7 variations of the article, 4 containing negative circumstances (psychiatric disturbance, romantic relationship breakup, parents’ divorce, alcohol problems), and 2 containing positive circumstances (being a varsity athlete, being an honors student). A control group received no information about circumstances. Knowledge of Pat's life circumstances had no effect on respondents’ estimates of the possibility of the suicide being imitated, but did affect attitudes about the suicidal act itself and attitudes toward Pat's family. Apparently the circumstances surrounding the suicide have no affect on respondents’ estimates of themselves following suit, but do affect how they see the victim and bereaved family.     

Accurately Imagining Suicide: Imagine-Self,Imagine-Person,Observer Instructions1

To see if actor versus observer instructions influenced students' perceptions of social support during a suicidal crisis, 80 students completed social support, interpersonal reactivity, and suicidal behaviors questionnaires. In a yoked design, students who had been suicidal were matched with those who were instructed to imagine themselves being suicidal, to imagine that another person was suicidal, or to observe a person who was suicidal. Those who had been suicidal in the past (n= 20) were more suicidal than the other 3 groups (ns= 20). The suicidal group perceived high social support (belonging and appraisal), compared to the others, who perceived moderate support. Overall, nonsuicidal college students consistently underestimated their suicidal peer's social support, regardless of the instructions they were given.     

The effects of therapist turnover in a training clinic: The core group phenomenon

Group psychotherapy conducted in training settings presents the membership with a unique opportunity to experience and work through loss. This paper describes the potentially problematic influence of predictable therapist turnover in these clinical settings. The core group phenomenon which emerges as a function of this anticipatory grief is described, as are the dynamics of core group members who are particularly vulnerable to the comings and goings of therapists in training. Finally, the importance of therapist attention to the impact of the turnover process in group psychotherapy training programs is underscored.     

Religious Affiliation Influences on the Health Status and Behaviours of Students Attending Seventh-Day Adventist Schools in Australia

Students attending Seventh-day Adventist (Adventist) schools in Australia have been shown to have better health status and behaviours compared to secular norms, yet these schools cater for a high percentage of non-Adventist students. The purpose of this study was to investigate the influence of religious affiliation (Adventist/non-Adventist) on the health status and behaviours of students attending Adventist secondary schools in Australia. The sample included 1734 students who responded to a health and lifestyle survey that captured demographic details, self-reported height and weight, self-reported health status, mental health and select health behaviours. Students who identified themselves as Adventist reported significantly better health behaviours than the non-Adventist students in several behavioural domains, especially among the male students. However, this did not translate to a difference in health status. Further research is needed to understand the causal mechanisms responsible for the potential health advantage of Adventist students, which may include family or church religious influences.     

Infants' tracking of objects and collections

Recent research suggests that infants' understanding of the physical world is more complex and adult-like than previously believed. One of the most impressive discoveries has been infants' ability to reason about medium-sized, material objects. They are able to individuate objects in a scene, and to enumerate and reason about them. This article reports a series of experiments investigating 8-month-old infants' ability to reason about collections of objects. Experiment 1 shows a sharp contrast between infants' understanding of single objects versus collections. While infants detected the discontinuous ('Magical') disappearance of a single object, they did not detect the Magical Disappearance of a non-cohesive pile of objects. Experiments 2-4 found that infants' difficulty remained even when the distinct identity of each object in the collection was emphasized, but could be overcome if infants (a) first saw the individual objects clearly separated from each other prior to their being placed together in a pile, or (b) had prior experience with the objects making up the collection. Our findings suggest that infants' expectations about object behavior are highly specific regarding the entities they are applied to. They do not automatically apply to any and all portions of matter within the visual field. Both the behavior of an entity, and infants' prior experience play roles in determining whether infants will treat that entity as an object.     

Development of perceptual asymmetry for free viewing of chimeric stimuli

Free-viewing chimeric stimuli tasks have been used in a number of studies to assess perceptual asymmetries and draw inferences about hemispheric lateralization in children and adults. In order to determine whether perceptual asymmetries for nonverbal information are present in children, a free-viewing chimeric stimuli task was used in 63 normally developing 6- through 16-year-old children. Stimuli included affect (happy faces), gender, quantity, and shape. An overall left hemispace (LHS) advantage was present by 6 years of age. This LHS preference was more prominent by age 10 and then plateaued. No preference for shape was detected at any of the age ranges studied. These results suggest that perceptual asymmetries for visual stimuli develop during childhood and appear to reach a plateau by age 10. The observed specificity for certain types of nonverbal stimuli should be taken into account in future studies of perceptual asymmetry in both normal and neurologically impaired children.     

Associative and categorical relations in the associative memory illusion

What kinds of associations underlie the associative memory illusion? In Experiment 1, lists composed of horizontal, or coordinate, free associates elicited false recognition of critical lures much more often than did lists composed of vertical, or subordinate, category instances. Experiment 2 replicated this result, and showed that the difference between free associates and category instances was not an artifact of differential levels of forward or backward associative strength. Associative structure plays an important role in the associative memory illusion: The illusion is strongest when the critical lure lies at the same level of categorization as the studied items.