Conditioning of the nictitating membrane response of the rabbit (Oryctolagus cuniculus) as a function of length and degree of variation of intertrial interval

The study involved three experiments. The first, a parametric investigation of nictitating membrane conditioning with eight constant intertrial intervals (ITIs) between 5 and 120 sec, orthogonal to interstimulus intervals (ISIs) of 250 and 750 msec plus three temporal conditioning control groups, revealed that performance improved rapidly with increasing ITI but stabilized at relatively low ITI values. At 750-msec ISI, a decrement in performance was found at 60-sec ITI. Experiment II, using constant ITIs of 45–75 sec in 5-sec steps, at 750-msec ISI confirmed the trend toward a performance decrement around 60 sec, although the trend was weak and highly variable. Experiment III evaluated the differences in performance between constant and variable ITI, using three ITI values and three conditions of variation at each value. Findings were discussed in terms of differences in conditioning resulting from both length and degree of variation of ITI and some subtle effects which may emerge only when constant ITIs are used.     

A study of the validity of four types of student ratings of college teaching assessed on a criterion of student achievement gains

The purpose of the study was to investigate relationships between student ratings of college teaching using four types of student rating instruments and pre- vs. post-student achievement gains in 36 sections of an undergraduate analytic geometry and calculus course. Student rating instruments used varied according to type of items (high vs. low inference) and focus (students rating their own perceived growth vs. rating the instructor). Data were collected on 799 students (66% freshmen; 16% sophomore; and 15% juniors) at the University of Florida, and relationships were analyzed using the Pearson product-moment correlation technique. Significant relationships were not found between student ratings and student achievement.     

Ratings by Counselors Without Teaching Experience And Their Principals Regarding Performance of Guidance Functions

This study compared principal and self ratings of performance of guidance functions for practicing counselors who did not have teaching experience. The sample consisted of 43 counselors and their principals from throughout the United States. The ratings indicate better-than-average initial counselor acceptance by administrators, teachers, students, and parents with the degree of acceptance being greater after they had counseled for a while. Principal and self ratings differed significantly on initial acceptance by students and present acceptance by other counselors. Ratings of acceptance by both school psychologists and social workers were below average. There was no significant difference in counselor and principal ratings of counselor understanding of various school procedures and policies or of their ability to perform basic guidance activities. A majority of the principals who had worked with the counselors with non-teaching backgrounds indicated they would recommend the hiring of such a person to their school board.     

The Strong African American Families Program: translating research into prevention programming

A randomized prevention trial contrasted families who took part in the Strong African American Families Program (SAAF), a preventive intervention for rural African American mothers and their 11-year-olds, with control families. SAAF is based on a contextual model positing that regulated, communicative parenting causes changes in factors protecting youths from early alcohol use and sexual activity. Parenting variables included involvement-vigilance, racial socialization, communication about sex, and clear expectations for alcohol use. Youth protective factors included negative attitudes about early alcohol use and sexual activity, negative images of drinking youths, resistance efficacy, a goal-directed future orientation, and acceptance of parental influence. Intervention-induced changes in parenting mediated the effect of intervention group influences on changes in protective factors over a 7-month period.     

DEVELOPING PARENT‐PROFESSIONAL PARTNERSHIPS IN A POSTSECONDARY EDUCATION PROGRAM FOR STUDENTS WITH DISABILITIES

Opportunities are increasing for students with intellectual and/or developmental disabilities to attend postsecondary education programs located at college campuses around the nation. Students who attend postsecondary education programs experience numerous positive outcomes, including independent living skills and expanded social networks. However, although parent‐professional partnerships could significantly enhance long‐term outcomes such as competitive employment and independent living, there is a paucity of information about the nature of these partnerships in postsecondary settings. The purpose of this expository article is to describe how staff from a midwestern postsecondary education program facilitate parent‐professional partnerships through parent involvement and support.     

Measuring the relationship between two questionnaires: appropriate definitions of intuitive understandings

A number of recent articles have claimed strong relationships—i.e., very high ‘proportions of shared variance’—between pairs of teaching and learning questionnaires. These claims have been the subject of debate and it has emerged that the proportion of shared variance is defined as the complement of Wilks’ lambda. The present article argues that this is not an appropriate measure for the data being analyzed. First some intuitive understandings of the situation are developed. A case study finds that the (Wilks‐based) proportion of shared variance between two questionnaires is 79%, but that the first questionnaire explains only 27% of the variance in the second and the second explains only 40% of the variance in the first. The technical literature is then considered and alternatives to the complement of Wilks’ lambda are recommended as measures of the relationship between two sets of variables.     

A View on the Current Situation in Russian Education

This paper reflects the current state in Russian education which has a strong correlation with the socio-economic crisis. The responsibilities for education are held partially by the state and partly by other social institutions and as a whole, all of them form the system of education. There is a rather wide set of laws, decree statements, and rules about education in Russia, but they currently are far removed from practical realization. The situation with financing educators, schools, and universities is very critical at present in Russia. The idea of differentiation and democratization in School Reform has had both positive and negative effects. To rescue the Russian system of education from a crisis, a strong state policy in education and a strong system of implementation are required. This revised version was published online in July 2006 with corrections to the Cover Date.     

Effects of contextual cues previously paired with footshock or illness on behavior and pain sensitivity in the rat

Rats were used in four experiments to study the effects on behavior and pain sensitivity of exposure to a context previously paired with footshock or injection of the emetic drug lithium chloride (LiCl). Exposure to a context previously paired with footshock or injection of LiCl provoked the species-typical defense response of freezing (Experiments 1A and 1B). Exposure to a context previously paired with footshock additionally produced hypoalgesia when rats were tested using the tailflick test (Experiment 1A). By contrast, exposure to a context previously paired with injection of LiCl produced hyperalgesia when rats were tested using the tailflick test (Experiment 1B). However, exposure to a context previously paired with injection of LiCl did provoke hypoalgesia when rats were tested for pain sensitivity using either the hotplate or formalin tests (Experiment 2), which was mediated by the release of endogenous opioid peptides (Experiment 3). These results are discussed with reference to the processes governing associative regulation of defensive behavior and pain control.