A compensatory counting system: academic skill training.
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Adolescent↗
Biomedical subjects
J Hartwick
Publications and source records attributed to J Hartwick.
Social facilitation effects in recognition memory.
This study investigates the effects of observer presence on recognition memory. The number of learning repetitions, the degree of association of category-instance word pairs, and the time interval between acquisition and testing were manipulated. While the basic recognition data conformed well to previous findings in the learning and memory literature, predictions, derived from the drive theory of social facilitation found little support. Instead, study results seem best explained by descriptions of the cognitive processes employed by subjects both during the initial acquisition and later recognition of the category-instance pairs.
Adult↗
Platinum-induced filamentous growth in Escherichia coli.
Certain group VIIIB transition metal compounds were found to inhibit cell division in Escherichia coli, causing marked filamentous growth. Gram-negative bacilli were the most sensitive to this effect, whereas gram-positive bacilli responded only at near-toxic levels of the metal. None of the cocci tested showed any apparent effect. Cytokinesis (cross-septation) can be initiated by removal or decrease of platinum, but not by treatment with pantoyl lactone, divalent cations, or a temperature of 42 C.
Bacteria↗