Agreement of parent and teacher rating scales with comprehensive clinical assessments of attention deficit disorder with hyperactivity

Forty-one clinic-referred children were given the DSM-III diagnosis of attention deficit disorder with hyperactivity (ADD/H) based on structured diagnostic interviews of the child and mother and on two teacher and two parent rating scales. The degree of agreement between diagnostic classification of ADD/H based solely on criterion scores on each rating scale and classification based on the comprehensive clinical assessments that included use of the same rating scaleswas assessed by comparing the ratings of the 41 children with ADD/H to those of 47 clinic-referred children given other diagnoses or no diagnosis. The accuracy of classification was highly similar across scales. Increasing the cutoff score increased the acing true positives. Using the point of intersection of these two curves to choose the optimal cutoff scores resulted in 70–75% accurate classification and 25–30% misclassification of children given clinical diagnoses of ADD/H. This rate of misclassification suggests that rating scales alone should not be used to classify ADD/H for most clinical and research purposes, especially because the method of comparison used in this study favored finding a high degree of correspondence.     

An Attributional Analysis of Reactions to Magic Johnson1

Principles from attribution theory were used to analyze public reactions to the health status of Magic Johnson. An experimental study containing two distinct samples (college students and African-American adults) together with supplemental reports from local and national media confirm the value of this approach. The findings show that inferences about causal responsibility are related to affective reactions of sympathy and anger toward Magic Johnson. Implications for attribution theory, as well as for future attitudes toward Magic Johnson, are discussed.     

Do we know what we've learned from listening to the news?

This study investigates the relationship between knowledge acquisition and an awareness of that knowledge within the context of listening to the news, Subjects listened to a recording of a radio news program consisting of regular news items as well as editorials, manipulated to be of high or low personal relevance. They then completed a surprise memory test and rated their confidence in their answers. In contrast to many studies, the results indicated a strong positive confidence-accuracy relationship. Confidence ratings were generally a better predictor of an individual's performance than were predictions based on item difficulty. Whereas subjects reported strong and accurate feelings of knowing, they apparently lacked complementary feelings ofnot knowing. The implications of these findings and others are discussed.     

Afterword

The author commends this collection of papers on applied cognitive psychology and the Guest Editor's distinction between basic, ecologically valid and applied research. The relationship of these three varieties of research is discussed in relation to the findings reported by the various contributors to this Special Issue of Applied Cognitive Psychology.     

Of whistleblowers, investigators, and judges

Conclusion: Deliberate misrepresentation continues. Needleman attacks the whistleblowers, the NIH, and his own University to deflect attention from the indications of misconduct in his research. Federal agencies base policies on his research and on his assertions regarding the purported effects of low-level lead exposure on children. The policies divert resources and attention from the real needs of children. Misconduct issues will ultimately be resolved by the ORI and the courts. Public policy issues may require reconsideration in light of further evidence.     

A Comparison of Residents Who Moved Versus Those Who Remained Prior to Restart of Three Mile Island1

This study examines the importance of attitudinal and demographic variables in discriminating those residents who had moved prior to the restart of the Three Mile Island nuclear reactor in 1985 from those who remained. Findings indicate that movers and stayers were discriminated by demographic factors, age, and length of residence in the vicinity. Movers and nonmovers also differed in the interrelatedness of their attitudes pertaining to environmental threat and perceived control. Among those who left, perceived threat of radiation was associated with lack of control; among those who stayed, perceived control was related to faith in experts. This difference was related to a possible defensive adaptation to environmental threat through disassociation of sense of control from worry about environmental threat by those who remained in the area.     

Contrast and spatial variables in texture segregation: testing a simple spatial-frequency channels model

Observers were shown patterns composed of two textures in which each texture contained two types of elements. The elements were arranged in a striped pattern in the top and bottom regions and in a checked pattern in the center region. Observers rated the degree to which the three regions were seen as distinct. When the elements were squares or lines, perceived segregation resulting from differences in element size could be canceled by differences in element contrast. Minimal perceived segregation occurred when the products of the area and the contrast (areal contrasts) of the elements were equal. This dependence of perceived segregation on the areal contrasts of the elements is consistent with a simple model based on the hypothesis that the perceived segregation of the regions is a function of their differential stimulation of spatial-frequency channels. Two aspects of the data were not consistent with quantitative predictions of the model. First, as the size difference between the large and small elements increased, the ratings at the point of minimum perceived segregation increased. Second, some effects of changing the fundamental frequency of the textures were not predicted by the model. These discrepancies may be explained by a more complex model in which a rectification or similar nonlinearity occurs between two stages of orientation- and spatial-frequency-selective linear filters.