Racism: What It Is and What It Isn't

The words `racist' and `racism' have become so overused that they nowconstitute obstacles to understanding and interracial dialogue aboutracial matters. Instead of the current practice of referring tovirtually anything that goes wrong or amiss with respect to race as`racism,' we should recognize a much broader moral vocabulary forcharacterizing racial ills – racial insensitivity, racial ignorance,racial injustice, racial discomfort, racial exclusion. At the sametime, we should fix on a definition of `racism' that is continuouswith its historical usage, and avoids conceptual inflation. Isuggest two basic, and distinct, forms of racism that meet thiscondition – antipathy racism and inferiorizing racism. We should alsorecognize that not all racially objectionable actions are done froma racist motive, and that not all racial stereotypes are racist.     

ASSESSING WOMEN'S FEMINIST IDENTITY DEVELOPMENT Studies of Convergent, Discriminant, and Structural Validity

Researchers have called for increasing sophistication in the assessment of women's feminist identity development (Enns & Hackett, 1990; Hackett, Enns, & Zetzer, 1992) to understand important psychological processes. This series of studies examined recent efforts to operationalize Downing and Roush's (1985) model of feminist identity development. Specifically, the psychometric properties of two existing measures—the Feminist Identity Development Scale (Bargad & Hyde, 1991) and the Feminist Identity Scale (Rickard, 1987)—were examined in two studies with separate samples of women (total N = 486). Results of Study 1 indicated the strengths and significant limitations associated with each scale (e.g., low internal consistency for some subscales, item-subscale inconsistency). A composite measure (derived from these scales) with better overall psychometric properties is described. In Study 2, we found good support for the composite instrument's internal consistency, as well as convergent, discriminant, and factorial validity in a sample that included a wide age range and nonstudent community residents.     

Hippocampal tauopathy in tau transgenic mice coincides with impaired hippocampus-dependent learning and memory, and attenuated late-phase long-term depression of synaptic transmission

We evaluated various forms of hippocampus-dependent learning and memory, and hippocampal synaptic plasticity in THY-Tau22 transgenic mice, a murine tauopathy model that expresses double-mutated 4-repeat human tau, and shows neuropathological tau hyperphosphorylation and aggregation throughout the brain. Focussing on hippocampus, immunohistochemical studies in aged THY-Tau22 mice revealed prominent hyper- and abnormal phosphorylation of tau in CA1 region, and an increase in glial fibrillary acidic protein (GFAP) in hippocampus, but without signs of neuronal loss. These mice displayed spatial, social, and contextual learning and memory defects that could not be reduced to subtle neuromotor disability. The behavioral defects coincided with changes in hippocampal synaptic functioning and plasticity as measured in paired-pulse and novel long-term depression protocols. These results indicate that hippocampal tauopathy without neuronal cell loss can impair neural and behavioral plasticity, and further show that transgenic mice, such as the THY-Tau22 strain, might be useful for preclinical research on tauopathy pathogenesis and possible treatment.     

SEPARATE AND COMBINED EFFECTS OF METHYLPHENIDATE AND A BEHAVIORAL INTERVENTION ON DISRUPTIVE BEHAVIOR IN CHILDREN WITH MENTAL RETARDATION

We investigated the separate and combined effects of a behavioral intervention and methylphenidate (Ritalin®) on disruptive behavior and task engagement in 3 children with severe to profound mental retardation. The behavioral intervention involved differential reinforcement of appropriate behavior and guided compliance. All 3 children demonstrated decreased disruptive behavior and improved task engagement in response to the behavioral intervention. Two of the 3 children demonstrated similar improvement in response to methylphenidate. Although both interventions were highly effective for these 2 participants, the relative efficacy of the interventions varied between the 2 children. There was no evidence of an additive or synergistic effect of the two interventions, but the high efficacy of each intervention alone limited our ability to detect such effects.