The psychophsiology of aggressive drivers: comparison to non-aggressive drivers and pre- to post-treatment change following a cognitive-behavioural treatment

Twenty drivers were remanded to our treatment program by the courts following arrests related to serious aggressive driving behaviors. Ten additional drivers entered our program in response to our advertisements thus identifying themselves as aggressive drivers. Psychophysiological assessments were conducted on all 30 drivers and heart rate (HR), systolic and diastolic blood pressure (SBP and DBP), and skin resistance level (SRL) were measured in response to exposure to a mental arithmetic neutral stressor, two idiosyncratic, audio-taped, aggressive driving vignettes (audio 1 and audio 2), and one non-driving related fearful vignette. Fourteen non-aggressive driving controls also completed the assessment. The results indicated that the aggressive drivers (ADs) showed significantly more SBP responsivity during audio 1 and audio 2 and significantly less SBP reactivity during the mental arithmetic stressor than the controls. The aggressive drivers then completed a four-week, group intervention which included relaxation techniques specifically targeting aggressive driving behaviors. The same psychophysiological assessment was conducted at post-treatment. The results showed significant pre- to post-treatment decreases in HR, p<0.003, SBP, p<0.01, and DBP, p<0.02 during audio 1. Similarly, decreases were evident in audio 2 in SBP, p<0.03 only. No decreases in reactivity occurred during the neutral stressor or fearful situation.     

Assessing the validity of implicit egotism: a reply to Gallucci (2003)

B. W. Pelham, M. C. Mirenberg, and J. T. Jones (2002) argued that most people prefer stimuli that are associated with the self, a preference they called implicit egotism. In support of implicit egotism, Pelham et al presented evidence from 10 archival studies showing that people gravitate toward careers and places of residence that resemble their names or birthday numbers. M. Gallucci (2003) argued that alternate analyses of the same data provide strong evidence against implicit egotism. Whereas Gallucci was correct that Pelham et al's original analyses were flawed, their results remain significant even when more conservative tests are used. The authors also present new data in support of implicit egotism, including exhaustive studies of (a) common surnames and US city names and (b) common surnames and street names. The new studies also revealed that as sample sizes grow larger, studies are more likely to produce evidence of implicit egotism.     

Wais-III matrix reasoning: instruction effects on task perception and performance

Instructions for the Matrix Reasoning subtest of the WAIS-III do not communicate to examinees that the subtest is untimed. The present study examined what percentage of participants (34 women, 26 men, M age = 20.1; 55 Caucasian, 3 African American, 2 Hispanic) made the assumption that Matrix Reasoning was timed, and its effect on examinees' scores. 55% of participants receiving standard instructions retrospectively reported assuming the subtest was timed, and those who did not assume Matrix Reasoning was timed scored significantly higher than participants who did. Participants receiving additional instructions that clarified the untimed nature of Matrix Reasoning scored significantly higher than those receiving standard instructions who believed the subtest was timed.     

Testing therapies less effective than the best current standard: ethical beliefs in an international sample of researchers

To test the range of beliefs regarding the ethics of testing, in resource poor settings, new therapies that are less efficacious but more affordable and feasible than the best current therapeutic standard.     

Comparative assessment of handedness for a coordinated bimanual task in chimpanzees (Pan troglodytes), gorillas (Gorilla gorilla) and orangutans (Pongo pygmaeus)

Hand preferences for a coordinated bimanual task were assessed in a sample of 31 captive gorillas (Gorilla gorilla) and 19 captive orangutans (Pongo pygmaeus) and were compared with chimpanzee (Pan troglodytes) hand preferences in subjects that were matched on the basis of age, sex, and rearing history. The task required that the apes remove food from the inside edges of a symmetrical polyvinyl chloride pipe presented to them in their home cages. The results indicate significant species differences with chimpanzees showing population-level right-handedness and orangutans showing population-level left-handedness. The gorillas showed a nonsignificant trend toward right-handedness. The results are discussed in terms of possible ecological or biomechanical factors that may influence hand preferences in different ape species.     

Cease remembering: control processes in directed forgetting

On the premise that committing a word to memory is a type of covert action capable of being stopped, this study merged an item-method directed forgetting paradigm with a stop signal paradigm. The primary dependent measure was immediate recall. Indicating that participants were able to countermand the default instruction to remember, there was an overall directed forgetting effect, the magnitude of which varied as a function of forget signal delay. The results suggest that the covert act of intentionally forgetting may engage cognitive control processes at encoding that are analogous to those required to prevent the execution of prepotent overt responses.     

Warning signs for suicide on the Internet: a descriptive study

The issue of suicide warning signs on the Internet is considered. In addition to reviewing some of the relevant conceptual issues about warning signs, a random sample of Internet sites was selected and reviewed. Warning signs were grouped and agreement across sites was examined, with results confirming broad disparity in what is presented to the public. The implications of a lack of consensus on warning signs for suicide are discussed.