The influence of variations in school setting on the development of ethnic role taking skills and ethnic identity were examined in English speaking Canadian children in grades 1-5. Their instructional settings were either monolingual in the first language (English), monolingual in a second language (French), or bilingual (French and English).…

Describes a computer simulation to elucidate the subject of coherence. The model on which simulation is based links coherence to the correlation of fields. It also describes the model and presents some results. (Author/GA)

Discusses the solubility characteristics of bromine salts. (CP)

Data reveal that the absorption spectra of alkali metals can be analyzed using a modified laboratory procedure. ( CP)

Describes the laboratory procedure to be used for an effective demonstration of aldol condensation. (CP)

Ethylene hydrogenation on a platinum catalyst, electrolytically applied to a tube wall, is a good system for the study of the interactions between diffusion and surface reaction in heterogeneous catalysis. Theoretical background, apparatus, procedure, and student performance of this experiment are discussed. (BB)

Two experiments are reported which compared different forms of presentation of a perspective-taking task. The task required 4-year-old children to select pictures showing another person's view of an array similar to Piaget and Inhelder's mountains. (Editor)

This research was undertaken to determine the factor structure of the 26-item revised versions of the Mehrabian (1968) Female and Male scales, a self-report instrument designed to measure achievement motivation. (Author/RK)

Grant and Roberts found that houselight presented throughout the delay period on a delayed matching-to-sample task caused pigeons to demonstrate a much lower level of accuracy than was found when the delay was spent in darkness. A series of experiments was carried out to examine possible mechanisms responsible for this light-induced retroactive…

Argues for the importance of combining the concerns of the functionalist (Dewey, 1910) approach to memory with investigations of the effects of context and task demands. Two experiments are reported that demonstrate interactions between task demands and the more traditional functionalist variables. Particularly demonstrates that the effects of…

Three experiments were designed to clarify the perplexing ability of subjects to discriminate between to-be-remembered (T BR) and to-be-forgotten (TBF) items in memory. Results implicate within-list retrieval of TBR items as a potent tagging or strengthening operation that provides a basis on which those items may later be discriminated from TBF…

Reviews the chemistry of methylmercury, methylmercury poisoning, and its treatment. (SL)

Describes a laboratory experiment to analyze wine for its major components using a standard enological analytical procedure. (Author/GA)

Describes a safe and simple laboratory experiment to polymerise alkenes. Uses a two components catalyst; an unsolveted Grignard reagent and titanium (IV) chloride. (GA)

A phase catalyst approach to nucleophilic and electrophilic reactions is proposed. (CP)