Brief report: preliminary results of a suicide awareness mass media campaign in Cuyahoga County, Ohio

Little information is currently available concerning the effects of suicide awareness and prevention campaigns. This brief report provides preliminary information about the influence of such a media campaign on the number of suicide-related telephone calls to an emergency mental health service in Cuyahoga County, Ohio. Examination of the pattern of calls before, during, and between phases of the campaign suggests that the media campaign significantly increased telephone calls to the emergency service. We provide this information to catalyze similar sharing of data and experiences among those organizations and agencies working to prevent suicide.     

Age-related changes in executive function: an event-related potential (ERP) investigation of task-switching

Older adults have difficulty when executive control must be brought on line to coordinate ongoing behavior. To assess age-related alterations in executive processing, task-switching performance and event-related potential (ERP) activity were compared in young and older adults on switch, post-switch, pre-switch, and no-switch trials, ordered in demand for executive processes from greatest to least. In stimulus-locked averages for young adults, only switch trials elicited fronto-central P3 components, indicative of task-set attentional reallocation, whereas in older adults, three of the four trial types evinced frontal potentials. In response-locked averages, the amplitude of a medial frontal negativity (MFN), a component reflecting conflict monitoring and detection, increased as a function of executive demands in the ERPs of the young but not those of the older adults. These data suggest altered executive processing in older adults resulting in persistent recruitment of prefrontal processes for conditions that do not require them in the young.     

The Relationship Between Personality Traits and Reflective Judgment Among Female Students

Forty-three female undergraduate and graduate students preparing for careers as educators provided Omnibus Personality Inventory and Reflective Judgment Interview data. The sample included 14 seniors, 15 master's candidates, and 14 doctoral candidates. Each educational level group included participants with a range of intellectual disposition scores as measured by the Omnibus Personality Inventory. Scores on six scales of the Omnibus Personality Inventory correlated significantly with Reflective Judgment Interview scores (p < .05): thinking introversion, response bias, altruism, autonomy, complexity, and theoretical orientation. These findings support the conclusion that postformal reasoning, as described in P. M. King and K. S. Kitchener's (1994) reflective judgment model of cognitive development, is related to measurable personality traits.     

Idiodynamic Profiles of Cardiovascular Activity: A P-technique Approach

A study was conducted to expand the conventional view of cardiovascular (CV) reactivity by using the idiodynamic paradigm for investigation of individuals. Patterns of autonomic CV regulation were assessed in six subjects across diverse laboratory tasks on three separate occasions. Individual CV profiles were derived from these data with P-technique factor analysis, and then group aggregated with chain P-technique. The composite pattern suggested a three-component solution consisting of cardiac rate, cardiac contractility, and peripheral resistance factors. Individual profiles were compared to the composite pattern; these profiles differed in the number of components derived, percentage variance explained by these components, and relative dominance of specific CV components. A hypothesis that emerged is that the subjects differed in the complexity of CV control. It appears that the idiodynamic framework, combined with novel research designs and statistical methods, may help expand the view of CV reactivity beyond the traditional unitary view as response magnitude.     

An automated apparatus for presenting depth-rotated three-dimensional objects in human and animal object recognition research

For practical reasons, research on the recognition of objects from different viewpoints has relied almost exclusively on the use of two-dimensional representations of three-dimensional objects. We describe an apparatus that enables the presentation of three-dimensional objects in a discrimination learning paradigm. Three chambers positioned on a movable table allow each of two objects to be presented on either the left or the right side; a viewing window exposes only two of the objects at a time. The objects can be arbitrarily designated as either an S+ or an S−. In addition, they can be placed precisely in any arbitrary Startposition and rotated in depth in 100 steps of 3.6° each. We have successfully used this apparatus to investigate recognition of depth-rotated objects by both pigeons and humans. By varying the stimuli, number of stimulus chambers, and software programs, the apparatus can be used for other types of tasks and to investigate other types of processes.