How schemas affect eyewitness memory over repeated retrieval attempts

After observing a crime eyewitnesses are typically interviewed many times over an extended period of time. We examined how schema for a crime influenced the types of information eyewitnesses remembered and forgot across multiple interviews. People's schema for a bank robbery were identified, and recall of schema‐consistent, schema‐inconsistent and schema‐irrelevant information was extracted from eyewitness interviews conducted in two experiments which manipulated retention interval (3 days–12 weeks) and number of interviews (2–4). Consistent with fuzzy‐trace and associative network theories, schemas preserved accuracy for information central to the crime (schema‐consistent and inconsistent) at the expense of schema‐irrelevant information. Schema‐consistent intrusions did not increase across interviews. Copyright © 2003 John Wiley & Sons, Ltd.     

Excusing Responsibility for the Inevitable

It is by now well established that the fact that an action or aconsequence was inevitable does not excuse the agent from responsibilityfor it, so long as the counterfactual intervention which ensures thatthe act will take place is not actualized. However, in this paper I demonstrate that there is one exception to this principle: when theagent is aware of the counterfactual intervener and the role she wouldplay in some alternative scenario, she might be excused, despite the fact that in the actual scenario she acts, as we say, of her own freewill. I illustrate this contention by way of a critique of Fischer andRavizza's well-known account of responsibility for consequences.     

The hippocampus, space, and viewpoints in episodic memory

A computational model of how single neurons in and around the rat hippocampus support spatial navigation is reviewed. The extension of this model, to include the retrieval from human long-term memory of spatial scenes and the spatial context of events is discussed. The model explores the link between spatial and mnemonic functions by supposing that retrieval of spatial information from long-term storage requires the imposition of a particular viewpoint. It is consistent with data relating to representational hemispatial neglect and the involvement of the mammillary bodies, anterior thalamus, and hippocampal formation in supporting both episodic recall and the representation of head direction. Some recent behavioural, neuropsychological, and functional neuroimaging experiments are reviewed, in which virtual reality is used to allow controlled study of navigation and memory for events set within a rich large-scale spatial context. These studies provide convergent evidence that the human hippocampus is involved in both tasks, with some lateralization of function (navigation on the right and episodic memory on the left). A further experiment indicates hippocampal involvement in retrieval of spatial information from a shifted viewpoint. I speculate that the hippocampal role in episodic recollection relates to its ability to represent a viewpoint moving within a spatial framework.     

Hebb repetition effects in visual memory: the roles of verbal rehearsal and distinctiveness

A version of the Hebb repetition task was used with faces to explore the generality of the effect in a nonverbal domain. In the baseline condition, a series of upright faces was presented, and participants were asked to reconstruct the original order. Performance in this condition was compared to another in which the same stimuli were accompanied by concurrent verbal rehearsal to examine whether Hebb learning is dependent on verbal processing. Baseline performance was also compared to a condition in which the same faces were presented inverted. This comparison was used to determine the importance in Hebb learning of being able to visually distinguish between the list items. The results produced classic serial position curves that were equivalent over conditions with Hebb repetition effects being in evidence only for upright faces and verbal suppression as having no effect. These findings are interpreted as posing a challenge to current models derived from verbal-domain data.     

Finite rational self-deceivers

I raise three puzzles concerning self-deception: (i) a conceptual paradox, (ii) a dilemma about how to understand human cognitive evolution, and (iii) a tension between the fact of self-deception and Davidson’s interpretive view. I advance solutions to the first two and lay a groundwork for addressing the third. The capacity for self-deception, I argue, is a spandrel, in Gould’s and Lewontin’s sense, of other mental traits, i.e., a structural byproduct. The irony is that the mental traits of which self-deception is a spandrel/byproduct are themselves rational.

Two Cheers for “Closeness”: Terror, Targeting and Double Effect

Philosophers from Hart to Lewis, Johnston and Bennett have expressed various degrees of reservation concerning the doctrine of double effect. A common concern is that, with regard to many activities that double effect is traditionally thought to prohibit, what might at first look to be a directly intended bad effect is really, on closer examination, a directly intended neutral effect that is closely connected to a foreseen bad effect. This essay examines the extent to which the commonsense concept of intention supports a reasonably consistent and coherent application of double effect. Two important conclusions are these: (1) a number of traditionally proscribed activities involve a kind of “targeting” of innocents that can be taken to exhibit a direct intention to harm them; (2) a direct intention to harm need not involve a desire to harm in any ordinary sense of the latter expression. Thanks to Thomas Flint, Paul Benacerraf, Mark Johnston, Gilbert Harman, Tom Cavanaugh, Jorge Garcia, Robert Audi and an anonymous referee for useful discussion and written comments.     

Questions and reflections: the use of motivational interviewing microskills in a peer-led brief alcohol intervention for college students

The purpose of this study was to examine the association between peer facilitator adherence to motivational interviewing (MI) microskills and college student drinking behavior. First year students (N=67) took part in a Brief Alcohol Screening and Intervention for College Students (BASICS) led by peer facilitators trained in MI and BASICS. Participants were assessed pre- and 2 weeks post-intervention on contemplation to change, as well as, pre- and 3 months post- intervention on drinking quantity. Independent coders used the Motivational Interviewing Treatment Integrity scale (MITI, Moyers, Martin, Manuel, & Miller, 2003) to evaluate therapist MI adherence. Peer facilitators met beginning proficiency in MI on scores of empathy, the ratio of MI adherent behaviors to non-adherent behaviors and the ratio of open questions to total questions as defined by the MITI. Results indicated that a higher number of closed questions was related to less contemplation and a higher number of open questions was related to more contemplation post intervention. A higher number of simple reflections was associated with increased drinking at the 3 month assessment, however, complex reflections were found to attenuate the effect of simple reflections on changes in drinking. These findings highlight the importance of competent reflective listening skills and the need for continual training and supervision for peer facilitators.     

The influence of data-driven processing on perceptions of memory quality and intrusive symptoms in children following traumatic events

Ehlers and Clark [(2000). A cognitive model of post-traumatic stress disorder. Behaviour Research and Therapy, 38, 319-345] cognitive model of post-traumatic stress disorder (PTSD) has been relatively untested with children. Seventy-five children (7-16 years) were interviewed within 4 weeks of an injury that led to hospital treatment to examine whether peri-traumatic processing strategies (data-driven processing and fear) were associated with perceptions of memory quality and intrusive memories. Perceptions of memory quality mediated the relationship between data-driven processing and intrusive reactions but not avoidance, arousal or depressive reactions. Finally, the relationship between peri-event fear and intrusion reactions was mediated by perceptions of memory quality even after data-driven processing was controlled. The implications of these findings are discussed in the context of a cognitive developmental model of PTSD in children.