Classical eyeblink conditioning: Clinical models and applications

In this paper, we argue that the main reason that classical eyeblink conditioning has proven so useful when applied to clinical situations, is that a great deal of information is known about the behavioral and neural correlates of this form of associative learning. Presented here is a summary of three lines of research that have used classical eyeblink conditioning to study three different clinical conditions; autism, fetal alcohol syndrome, and obsessive-compulsive disorder. While seemingly very different clinical conditions, classical eyeblink conditioning has proven very useful for advancing our understanding of these clinical pathologies and the neural conditions that may underlie them.     

Identifying young people's guidance needs through telephone counseling.

This study examined the needs that young people in Guadalajara, in the state of Jalisco, Mexico, expressed in phone calls to a research unit of the Mexican Social Security Institute. Three hundred forty-five calls, from individuals 11 to 24 years old who phoned from June 1995 to November 1998, were analyzed. Two hundred ninety-four of the callers were female and 51 were male. Greater percentages of females than males called to ask about sexuality and family problems. Males more than females asked about reproductive health (particularly pregnancy) and mental health. There were significant differences by gender and age, differences that were not detected in health service statistics. The findings have implications for decision makers and health and education service providers. They point to the need for programs that will reinforce young people's good health practices and help them avoid risky behaviors.     

Predictors of college students' alcohol consumption: implications for student education

Understanding why young adults consume alcohol the way they do can lead to more effective educational programming for promotion of students' personal health and safety. The authors examined the predictive role of expectations about alcohol, perceived peer norms of consumption, awareness of rules, and individual self-efficacy in conjunction with demographic variables for male and female college students' weekly alcohol consumption. The sample of 4,960 students analyzed here is 10 to 20 times larger and more nationally representative than the samples used in similar studies. The authors used a general linear model; 41% of the men's variance and 33% of the women's variance in self-reported weekly alcohol consumption were explained by the set of predictors. In descending order of variance accounted for in male and female students' self-reported weekly alcohol consumption, perceived gender-specific norms of consumption, expectations about the effects of alcohol, and the importance of drinking in high school were significant predictors for both men and women. The salience of psychological variables for young adults' consumption of alcohol underscores the importance of recognizing individual predictors of behavior in the broader ecological context in which those behaviors are performed.     

Prior knowledge and recognition

The purpose of this series of experiments was to determine if and when word recognition would depend on the number of related concepts represented in permanent memory. Words defining either large or small rhyme or meaning categories were studied and tested under various conditions. The results indicated that rhyme category size influenced recognition whenever rhyme was emphasized during both study and testing phases. Words belonging to larger rhyme sets were not recognized as well as those belonging to smaller rhyme sets. In contrast, meaning-related set size had no effect on recognition. These and other findings indicate that the breadth of prior knowledge can influence recognition but only under limited conditions that reactivate this knowledge at test.     

Characteristic patterns of word association responses in institutionalized elderly with and without senile dementia

This study examined the responses of 91 institutionalized elderly persons to the Goldfarb-Halpern Word Association Test (1981), Journal of Speech and Hearing Research, 24, 233–246. Subjects with senile dementia evidenced a characteristic pattern of responses which included marked reduction of paradigmatic responses, no decrease in syntagmatic responses, and a marked increase in unclassifiable and multiword responses not previously reported in the literature. The declines and increases appeared linear and progressive with severity of dementia. The pattern was distinct from that of any other adult group previously tested with this tool. Institutionalized elderly subjects without senile dementia performed similarly to previously tested noninstitutionalized elderly. Theoretical and clinical implications are discussed.     

Family planning for inner-city adolescent males: pilot study

The results of a pilot family planning program (FPP) in a pediatric practice are reported for 66 inner-city male adolescents. The FPP was designed to eliminate registration barriers to the procurement of contraceptives by adolescent males, and to prompt the community neighborhood health center (CNHC) providers to initiate discussion of birth control with their male adolescent patients. Utilization data show that males were more likely to receive contraceptives if the provider first raised the topic of birth control to them. Unstructured follow-up interviews with 27 adolescent male FPP users identified a desire for anonymity/confidentiality and embarrassment or discomfort as the key reasons for not seeking contraceptives from the CNHC. If health care providers are sensitive to male adolescents' feelings about birth control, community health centers potentially could serve as a cost-effective source of contraceptives for sexually active male adolescents.     

Aging and memory for faces versus single views of faces

Differences in the ability of young adults and elderly to recognize faces were examined under two conditions. In a standard single-view condition, in which each input face was shown as one photograph, we confirmed prior findings that young adults perform better than the elderly at distinguishing photographs seen before from photographs of new faces. We also found that the elderly had more trouble distinguishing photographs seen before from photographs of(l) old faces changed in facial expression and (2) old faces changed in expression and pose. Yet there were no reliable age differences in distinguishing old-but-changed faces from entirely new faces. In a more naturalistic multi-view condition, in which each input face was shown in four poses and with two expressions, no age differences were found. A second experiment ruled out the possibility that varied repetition, by itself, removes age differences in recognizing faces. These data supported age differences in remembering facial expressions and possibly other details of photographs of faces, but not in remembering faces perse.     

Family life education in Chicago schools: a study of programs implemented by nonschool agencies

Although nonschool agencies provide important complementary courses on family life education (FLE) in public and private schools, little is known about the scope and content of such curricula. This paper describes a study documenting the types of school-based family life education programs implemented by nonschool agencies in Chicago. Semistructured telephone interviews were conducted with professionals from 26 health care and social service agencies, identified as offering FLE courses in the metropolitan area. The surveyed organizations provided FLE programs in almost 100 public and private schools in Chicago during the 1982-83 and 1983-84 school years. Most programs were relatively short, utilized few interactive teaching techniques (e.g., role-playing, exercises), covered a wide variety of topics, and were integrated into other curricula units rather than implemented as separate courses. Agency personnel covered topics viewed as important by school administrators and teachers, most notably information on contraception and sexual decision making.     

Use of a raster framebuffer in vision research

For the study of human and animal vision, the video framebuffer is the only technology that is capable of displaying two-dimensional images with precise control of contrast, luminance, and display timing. The video framebuffer also allows precise control of color. However, this device is not designed for precise psychophysical displays, and techniques must be developed to use them in this role. In this paper, we describe a number of basic methods used in our lab. In order to be concrete, we use an Adage RDS-3000 raster display system (Adage, 1982) as an example, since that is the device we have actually used. The Adage is hosted by a PDP-11/73 under the Venix operating system. The principles generalize to other machines. Where it clarifies the issues, we have shown the syntax of the software routines involved.