The effect of blinks and saccadic eye movements on visual reaction times

Vision is suppressed during blinks and saccadic eye movements. We hypothesized that visual reaction times (RTs) in a vigilance test would be significantly increased when a blink or a saccade happened to coincide with the stimulus onset. Thirty healthy volunteers each performed a visual RT test for 15 min while their eye and eyelid movements were monitored by a system of infrared reflectance oculography. RTs increased significantly, many by more than 200 msec, when a blink occurred between 75 msec before and up to 150 msec after the stimulus onset. A similar result was observed with saccades that started 75 to 150 msec after the stimulus. Vision or attention was evidently inhibited before each blink and for longer than the saccades lasted. We suggest that visual suppression is involved in this process, which could explain some of the normal variability in RTs over periods of seconds that has not been adequately explained before.     

Consumption After a Diet Violation: Disinhibition or Compensation?

ABSTRACT— Previous research, restricted to the laboratory, has found that restrained eaters overeat after they violate their diet. However, there has been no evidence showing that this same process occurs outside the lab. We hypothesized that outside of this artificial setting, restrained eaters would be able to control their eating. In Study 1 , 127 participants reported hourly on their diet violations and eating over 2 days. In Study 2 , 89 participants tracked their intake for 8 days, and 50 of these participants consumed a milk shake (a diet violation) on Day 7, as part of an ostensibly unrelated study. As hypothesized, dieters did not overeat following violations of their diet in either study. These findings are in contrast with those of previous lab studies and dispel the widely held belief that diet violations lead to overeating in everyday life.     

Pragmatic evaluation of the viability of CCBT self‐help for depression in higher education

This study explores the potential of a computerised cognitive behavioural therapy (CCBT) self‐help programme for depression within the context of a Higher Education Counselling Service. It seems timely to consider the place of evidence‐based alternatives to the face‐to‐face counselling traditionally provided in higher education with user choice in mind. There is also a need to cater for increasing numbers of students experiencing a wide range and severity of emotional difficulties, sometimes resulting in long waiting periods for help. In the study twelve depressed students used the CCBT programme ‘Beating the Blues’?. Ten (83.3%) participants completed the programme. Initial credibility of and expectancy‐for‐improvement from the intervention was high. Significant reductions in depression scores were found following completion, whilst anxiety scores changes were not significant. Feedback on the programme was largely positive. CCBT was clearly preferred to face‐to‐face counselling by some participants, supporting the need for a choice of interventions for students. These results suggest that CCBT may be an acceptable and effective intervention for a number of depressed students. It is argued that CCBT may be a viable addition to current provision in Higher Education Counselling Services and that further studies are required to investigate this further.     

Visual analysis of gait as a cue to identity

For humans, the ability to discriminate between, and to identify, others is paramount. The most obvious way this is accomplished is by means of face recognition. However, this is not the only method available. The present article reports on two experiments designed to see whether gait can be used as a reliable cue to identity. Experiment One showed that the human visual system was sophisticated enough to learn to identify six individuals on the basis of their gait signature under conditions of simulated daylight, simulated dusk and point‐light displays. It thus appeared that gait‐related judgements could be made, and furthermore, that these judgements were possible without reliance on shape information. Experiment Two suggested that even under adverse viewing conditions involving a single brief exposure, humans could identify a target from a ‘walking identity parade’ at greater than chance levels. These results emerged regardless of the lighting conditions, and were largely independent of the gender of the target walker. As such, the present results suggest that gait could be used as a reliable means of discriminating between individuals, and the importance of such an identity cue, in conditions in which the face is obscured, are discussed. Copyright © 1999 John Wiley & Sons, Ltd.     

New Development in Legal Advocacy

Mental health service users are voicing the need for advocacy which is responsive to the social oppression they encounter in their lives, and within services. The Kent Law Clinic provides free, independent legal representation for people with a mental illness or a learning difficulty. This article describes the development of the Clinic and some of its work.     

GOD VERSUS TECHNOLOGY? SCIENCE,SECULARITY, AND THE THEOLOGY OF TECHNOLOGY

Abstract. In debate with John Caiazza, we clarify the meaning of the terms technology and secular, arguing that technology is not really secular. Only when combined with antireligious secularism do we get the modern techno‐secular worldview. Science is not secular in the strong sense, nor does its practice automatically lead to the techno‐secular. As a complete worldview, techno‐secularism is antireligious, but it also is dehumanizing and destructive of our environment. Religion may provide a transcendent source for a humanizing morality that might move technology in a more ecofriendly, humane direction. The alternative is not a happy one for our posthuman technological future.     

Imprisoning masculinity

Prisons are characterized by a hierarchical and antagonistic institutional culture. The processes of the managerial and work culture in violent organizations, such as the prison, incorporate an explicit focus on authority and compliance with rigid rules and procedures; in this context, difference attracts harassment and victimization. These processes also encompass the enactment of “ordinary” authority, the normalization of harassment, and the ways in which violence is embedded in routine conversations and explanations (Hearn, 1996; 55). Group relations can function to legitimize, socialize and reproduce the values and practices connected with violence (Morgan, 1987: 185). Thus a focus on peer group relations, between and within groups of officers and prisoners, is critical and may reveal that which we would rather not know: that the functioning of prisons may be actively and significantly counterproductive to their proclaimed task—the reduction of crime.     

Age differences in reasons for exercising

We tested the hypothesis that there are age-related differences in reasons for exercising. Adults (n=461), ranging in age from 18 to 86, were asked to indicate if they had considered different types of consequences in their exercise decisions, and how important they thought those consequences were to consider. A three-factor consequence measure examined individuals’ consideration and importance evaluations of various categories of exercise consequences. Results provided mixed support for the hypotheses that younger individuals exhibit greater concern for interpersonal attraction outcomes, while older individuals exhibit greater concern for health outcomes. These results have implications for designing educational and motivational training programs.