Implicit synthesis

In this reply to Neal and Hesketh and to the commentators, we argue that implicit knowledge is partly abstract and can be usefully defined by the criteria of both metaknowledge and intentional control. We suggest that the pattern of dissociations supports a claim of separate implicit and explicit learning modes. According to our characterization, implicit learning leads to knowledge that is not automatically represented as knowledge by the learning process; instead, the presence of knowledge has to be inferred by the subject (partial explicitation) if metaknowledge is gained at all. During explicit learning, knowledge is automatically labeled as knowledge by the learning process, so that metaknowledge comes immediately and to the fullest extent. Finally, we suggest that implicit knowledge may to some degree apply regardless of intention.     

Impact of Two Clinical Peer Supervision Models on Practicing School Counselors

Two forms of clinical peer supervision were provided for a sample of 29 practicing school counselors. Pre- and posttest measures were used to assess the counselors' level of job satisfaction, counseling self-efficacy, and counseling effectiveness (including empathic responding, adaptability and flexibility in counselor response, and client behavior change). The sample was divided into 3 groups (2 treatment and 1 control). Each supervision treatment lasted 9 weeks. None of the analyses of covariance examining treatment effects were significant. However, these individually nonsignificant results showed movement in the hypothesized direction in each instance, indicating small but pervasive effects of treatment. Participants' qualitative session evaluations also supported the helpfulness of clinical peer supervision for school counselors. Implications for future research and the practice of school counselor supervision are discussed.     

Children and chess expertise: The role of calibration

Summary Three studies of calibration are reported. Calibration refers to the accuracy with which one can predict one's own performance. In the first study child chess players, non-chess playing parents, and statistics students were asked to predict chances of winning chess games against hypothetical opponents. These subjective probabilities were compared to the actual probabilities, based on the Elo rating system. Better players' predictions were better calibrated. Confidence and ratings are negatively correlated, indicating that with lower ratings, players are overconfident. Skilled child players' predictions were better calibrated than any of the adults'. In the second study subjects were asked to estimate chances of winning in conjunctive situations, e. g., winning all the rounds in a tournament. Again, better child players were more accurate in their predictions and more accurate than adults. In the third study, child players were asked to predict their chances of winning in a non-chess domain after hearing a hypothetical win/loss history. Higher-rated players' predictions were again better calibrated, even though the domain was outside their expertise. The motivational and cognitive implications of calibration are discussed.     

Exposure and communications training in the treatment of agoraphobia

Twenty-one agoraphobics participated in a 6-month study designed to (a) compare imaginal flooding under high- (no sedation) and low- (sedation used) anxiety conditions: (b) examine the long-term effects of imaginal flooding in the absence of further exposure treatment; and (c) explore the impact of communications training on chronic anxiety and panic attacks. A reevaluation of the effects of sedation is presented in this report.Imaginal flooding without sedation was, on the whole, superior to the attention control placebo and imaginal flooding with sedation on therapists' and clients' ratings of fear and avoidance. However, the superiority of the non-drug flooding group cannot be attributed (as was concluded in an earlier report) to higher levels of anxiety across flooding sessions. Rather the drug (methohexitone sodium) appears to have impeded across-session habituation, perhaps by interfering with long-term memorial processes.The effects of imaginal flooding without sedation were stable over 4 months without further exposure treatment. These clients did receive training in solving important interpersonal problems through self monitoring and increased expressiveness. Contrary to hypotheses, not only was no further improvement obtained on fear and avoidance with this treatment, but also anxious mood and panic attacks remained unaffected. It is surprising to note that in-vivo treatment was no more effective than imaginal flooding on fear and avoidance. These and other findings suggest imaginal flooding well warrants further study.     

The effects of trait label and order of presentation on observers' ratings of performance anxiety

In two experiments, the effects of different stimulus presentation orders and trait labels on observers' ratings of performance anxiety were examined. In Experiment 1, 60 college students viewed, in one session, ten 3-min videotapes of a man speaking while displaying a variety of the behavioral manifestations of anxiety. The tapes varied linearly in the percentage of time during which anxious behaviors were emitted. Anxiety ratings were made along either a “calm” or an “anxious” dimension. Subjects were randomly assigned to one of three orders of presentation conditions (with the frequencies of anxious behaviors ascending, descending, or randomized across tapes) and one of two trait-label conditions, calm or anxious. In Experiment 2, 60 additional subjects viewed these same tapes and a contrasting series designed to display a consistent rate of anxiety behaviors. These tapes were viewed in 10 sessions over a 2- to 5-week period. Results replicated prior studies showing that the order of presentation can significantly affect observers' ratings. Additionally, the results suggested that, under certain conditions, subjects may not perceive a conceptually dichotomous variable (e.g., calm vs. anxious) in the same way. These results are discussed in terms of the complexity of observer behavior and potential problems in comparing outcome studies that use dichotomous traits.     

The pregnant woman's place and where to find it

A two-part study examined attitudes toward pregnancy. The first part — a department store survey — looked at the location of maternity clothes in different status stores. Clothes were located differently, depending on the social class of the store. High status stores located them in or near lingerie and/or loungewear. Lower status stores located them in or near uniforms and/or half sizes. It is suggested that these differences reflect differential attitudes toward pregnancy in the different social classes. The second part of the study examined pregnant women's attitudes toward themselves. In line with the department store findings, there were differences between upper-class women and working-class women in self-report data. These data suggest that pregnancy is viewed differently, depending on social class.     

Rate of language acquisition and noun emphasis

Fifteen pairs of children were matched on MLU. Members of each pair differed by 6 months or more in age. The younger (precocious) children's language was compared to the older (slower) children's on a number of complexity measures. Precocious children emphasized nouns more and tended to make more errors; slower children scored higher on a comprehension task. This suggests that there may be qualitatively different approaches to language development that relate to speed of language acquisition.Parts of this paper were presented at the Boston University Conference on Language Development, 1977, under the title Individual Differences in Rate of Language Acquisition and at the New York Academy of Sciences in May 1979, under the title Nouns: Love 'em or Leave 'em. The author wishes to express her gratitude to Seymour Diamond and Jose Medina, without whom this article could not have been written.     

Does traffic congestion increase driver aggression?

In his recent article about aggressive driving, David Shinar proposed that the classical frustration-aggression hypothesis (Dollard, J., Doob, L., Miller, N., Mowrer, O. & Sears, R. (1939). Frustration and aggression. New Haven, CN: Yale University Press) provides a useful tool for understanding driver aggression (Shinar, D. (1998). Aggressive driving: the contribution of the drivers and situation. Transportation Research Part F, 1, 137–160). According to Shinar's (1998) application of the frustration–aggression hypothesis, driver aggression is caused by frustration because of traffic congestion and delays. In the present study, the relationships between exposure to congestion (rush-hour driving) and aggressive violations (DBQ) were investigated in Great Britain, Finland and the Netherlands. Partial correlations showed that the frequency of rush-hour driving did not correlate statistically significantly with driver aggression. Correlations between driving during rush-hour and aggression did not differ in magnitude from those between driving on country roads and aggressive violations. In addition, correlations between exposure to congestion and aggressive violations in countries with large number of vehicles per road kilometre (UK, Netherlands) were not higher than those in a sparsely populated country (Finland). These results from three countries suggest that congestion does not increase driver aggression as directly as suggested by Shinar (1998).     

On access representation in visual word recognition: The temporal separation technique

Summary This paper examines the evidence for an access representation based on the initial part of the word. A temporal separation technique, which presents test words in two parts, was used, and varied as to whether the first part included two, three, or four initial letters of a word. In contrast with previous studies, word-frequency effects were used to assess whether access had occurred from that initial part. Experiment 1 (in English) tested the validity of the temporal separation technique, and showed that it does impose an input segmentation. Experiments 2 (in English) and 3 (in Spanish) examined whether access to a monomorphemic word is achieved, using word frequency as a diagnostic of access. The implications of the findings for the notion of a partial input representation for access are discussed.