Alum Rock School District, San Jose, California, is the only school district to participate in OEO's education voucher experiment. In this speech, the superintendent of that school district describes the district's experience with education vouchers. He describes the experiment design and discusses parental attitudes on the voucher experiment. (JF)

The basic purpose of the present study was to study the effectiveness of using trained peers to lead small process groups in freshman orientation. A sample of 253 freshman students from East Central State College in Ada, Oklahoma, were used for the experiment. The instrument used to determine whether perceptions of the college campus climate…

Forty female subjects were given intermittent options to transmit noncontingent promises of intent to cooperate during the course of a mixed-motive laboratory game. In a 2 x 2 experimental design, a robot target either reciprocated subjects' promise statements or concealed her behavioral intentions, and was either always cooperative or always…

The relationships between the microteaching technique and experiential group meetings of student teachers are discussed. The author concludes that the linking of the two techniques might well prove of great value in the education of teachers. The journal is available from the Circulation Office, 325 9th St., San Francisco, California, 94103.…

Describes an experiment that utilizes a Joule-Thomson Demonstrator to show the floating nature of the pinch-point in a heat exchanger. (MLH)

The growth and study of lower fungi, especially Oomycetes and Zygomycetes, in the biology classroom are described. (BB)

The article summarizes the ten recommendations of the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research regarding ethical considerations involved in using children as experimental subjects. Journal availability: see EC 111 045. (DLS)

Describes an experiment illustrating a lesson in wave interference using bright colors in a soap film. Illustrations provided. (MA)

Two demonstrations are described which are suitable for introductory chemistry classes. The first involves the precipitation of silver, and the second is a demonstration of the relationship between rate constants and equilibrium constants using water and beakers. (BB)

A pair of studies conducted with first, third, and fifth graders supports the prediction that concrete, quantitative feedback, as opposed to qualitative comments, increases the validity of children's expectations of their level of performance. (Editor)

Describes a method of selecting index terms directly from a word frequency list, an idea originally suggested by Goffman. Results of the analysis of word frequencies of two articles seem to indicate that the automated selection of index terms from a frequency list holds some promise for automatic indexing. (Author/MBR)

Describes two elementary experiments involving plasma electrical conductivity. (SL)

Studies of the psychology of hindsight have shown that reporting the outcome of a historical event increases the perceived likelihood of that outcome. Three experiments show that similar hindsight effects occur when people evaluate the predictability of scientific results. Implications for the evaluation of scientific research by lay observers are…

How often are people wrong when they are certain that they know the answer to a question? The studies reported here suggest that the answer is "too often". The psychological bases for unwarranted certainty are discussed in terms of the inferential processes whereby knowledge is constructed from perceptions and memories. (Editor/RK)

Although experts in elementary education seem unable to devise wise and productive methods of student grouping, here is one experiment in grouping that is thought-provoking and may provide a more suitable classroom environment for developing harmony in student relationships. (Author/RK)