The eyewitness suggestibility effect and memory for source

We examined the possibility that eyewitness suggestibility reflects failures of the processes by which people normally discriminate between memories derived from different sources. To test this hypothesis, misled and control subjects were tested either with a yes/no recognition test or with a "source monitoring" test designed to orient subjects to attend to information about the sources of their memories. The results demonstrate that suggestibility effects obtained with a recognition test can be eliminated by orienting subjects toward thinking about the sources of their memories while taking the test. Our findings indicate that although misled subjects are capable of identifying the source of their memories of misleading suggestions, they nonetheless sometimes misidentify them as memories derived from the original event. The extent to which such errors reflect genuine memory confusions (produced, for example, by lax judgment criteria) or conscious misattributions (perhaps due to demand characteristics) remains to be specified.     

A Systematic Examination of Gain- and Loss-Framed Content in Educational Resources Targeting the Prevention of Performance Enhancing Substance Use Among Athletes

The purpose of this study was to systematically identify educational health messages aimed at preventing doping among adolescent athletes to determine and evaluate the degree to which they include gain- and loss-framed content. We systematically searched for educational resources that targeted the prevention of performance-enhancing substance use and reviewed their content for framed messages. Our search yielded 60 resources with 88.40% non-framed and 11.37% loss-framed. The resources included almost no gain-framed content (0.23%) despite theoretical suggestions that gain-framed messages may be effective in this context. Our findings suggest a need to test gain-framed doping prevention messages as a means to enhance the efficacy of doping prevention initiatives.     

Social anxiety,disengagement coping,and alcohol-use behaviors among adolescents

Background and Objectives: Although research indicates that social anxiety (SA) is associated with problematic drinking, few studies have examined these relations among adolescents, and all alcohol-related assessments have been retrospective. Socially anxious youth may be at risk to drink in an effort to manage negative affectivity, and a proclivity toward disengagement coping (e.g. avoidance of aversive stimuli) may enhance the desire to drink and learning of coping-related use. Design: Adding to research addressing adolescent SA and alcohol use, the current study examined (1) proportional drinking motives (subscale scores divided by the sum of all subscales), (2) current desire to drink in a socially relevant environment (introduction to research laboratory), and (3) the indirect effect of retrospectively reported disengagement in social stress contexts on proportional coping motives and desire to drink. Method: Participants were 70 community-recruited adolescents who reported recent alcohol use. Level of SA, disengagement coping, drinking motives, and desire to drink following laboratory introduction were assessed. Results: Proclivity toward disengagement in prior socially stressful contexts accounted for significant variance in the positive relations between SA and both proportional coping motives and current desire to drink. Conclusions: These data complement existing work. Continued efforts in building developmentally sensitive models of alcohol use are needed.     

The effect of brief delays to reinforcement on the acquisition of tacts in children with autism

We used discrete‐trial training to teach 3 children with autism to tact shapes of countries using 3 levels of reinforcement delay for correct responding: 0 s (immediate delivery), 6 s, and 12 s. Two of the 3 participants acquired the targets more quickly in the immediate‐delivery condition, suggesting that delays as brief as 6 s may be detrimental to learning tacts for some children.     

Research in the Psychological Laboratory: Truth or Triviality?

This article examines the truism that studies from psychological laboratories are low in external validity. Past rational and empirical explorations of this truism found little support for it. A broader empirical approach was taken for the study reported here; correspondence between lab and field was compared across a broad range of domains, including aggression, helping, leadership style, social loafing, self-efficacy, depression, and memory, among others. Correspondence between lab- and field-based effect sizes of conceptually similar independent and dependent variables was considerable. In brief, the psychological laboratory has generally produced psychological truths, rather than trivialities. These same data suggest that a companion truism about field studies in psychology—that they are generally low on internal validity—is also false.     

Homework and achievement: Explaining the different strengths of relation at the elementary and secondary school levels

Four explanations were tested for why the correlation between homework and achievement is weaker in elementary school than secondary school. Eighty-two teachers answered questions about their homework practices, and their responses were related to their students' achievement test scores. No evidence was found to suggest the weaker correlation in elementary school associated with a restricted variation in amounts of homework in early grades nor that teachers assigned more homework to poor-performing classes. Evidence did suggest that teachers in early grades assigned homework more often to develop young students' management of time, a skill rarely measured on standardized achievement tests. Also consistent with this hypothesis, elementary school teachers were more likely to use homework to review class material and to go over homework in class, while secondary school teachers more often used homework to prepare for and enrich class lessons. Finally, there was weak evidence that young students who were struggling in school took more time to complete homework assignments.     

A comparison of the differential effects of three different baseline conditions within an ABA1B1 experimental design

The use of the ABA₁B₁ design over recent years in applied behavioural research has prompted many researchers to comment on its strengths and weaknesses (Kazdin, 1973; Kazdin and Bootzin, 1972; Liberman, 1972; Peck and Thorpe, 1971). One major problem is that many different types of non-contingent or no-reinforcement conditions have been used and that different types of baseline conditions may produce different effects. Despite the volume of research using a derivative of this design, surprisingly little is known about the effects of different baseline conditions.The baseline conditions most frequently used include the following: 1. No reinforcement (O'Leary and Becker, 1967; Hall et al., 1972; Aitchison and Green, 1974). 2. Threats (Phillips et al., 1971). 3. Reinforcing other types of behaviour (Ayllon and Azrin, 1965). 4. Equivalent amounts of reinforcement given in baseline and experimental conditions with all baseline reinforcement given non-contingently at the beginning or end of the phase (Wincze et al, 1972; Fernadez et al., 1973; Burchard, 1967). 5. Equivalent amounts of reinforcement in baseline and experimental conditions with baseline reinforcement given non-contingently at regular intervals or randomly throughout the phase (Foxx and Azrin, 1973; Baer and Wolf, 1970).Baer and Wolf (1970) have stated that: ‘Non-contingent reinforcement as a method of extinction has certain characteristics which may make it the method of choice for some experimental designs: especially those designs in which the adult offers reinforcers to a child’. They feel that this method is to be preferred because the total amount of reinforcement can be held constant over all conditions and thus will not be a confounding variable between conditions. However, as Skinner (1948) demonstrated, rate of behaviour can be changed by non-contingent reinforcement when ‘superstitious’ causal relations appear between behaviour and presentation of reinforcement. In effect the rate of behaviour increases because it has accidentally occurred before the presentation of reinforcement and so a connection is established whereby the probability of the behaviour is increased despite the fact that it is not causally related to reinforcement. Morse and Skinner (1957) have said about superstitious conditioning ‘Such effects must always be allowed for in designing experiments on complex behaviour’. Catania and Cutts (1963) and Yelen (1971) have shown that such superstitious conditioning can occur with human subjects.The present experiment employed three groups each trained under the same conditions but with different baseline conditions—1, 4 and 5 above. A multiple baseline design was used in which all possible responses were recorded in a four choice situation so that any accidental contingencies established would be evident.     

Interview training with adolescents—A controlled group study incorporating generalization and social validation

Ten school-leavers were allocated either to an interview-training group (E) or a discussion control group (C) for three sessions. For E group a combination of modelling, coaching, roleplay, feedback and discussion was used to train both verbal and non-verbal interview skills. An attempt was made to programme generalization of treatment effect into training and subjective evaluations of interview skill were made by an experienced Personnel Officer to assess the social importance of the skills trained. After C group had completed three sessions to control for the non-specific effects of being in therapy, they received the same training as E group. Subjects were assessed using videotaped roleplayed interviews at the beginning and end of each training phase. After training E group showed significant improvements on both global and specific ratings of interview skill compared to C group; there was evidence of generalization and maintenance of treatment effect and the social importance of the skills trained was substantiated by the subjective evaluation data. C group then went on to replicate the changes in E group.