Can squirrel monkeys (Saimiri sciureus) plan for the future? Studies of temporal myopia in food choice

In seven experiments, 2 squirrel monkeys were given choices between arrays of food that varied in the quantity offered. In Experiments 1-5, the monkeys were offered choices between quantities of the same food that varied in a 2:1 ratio. The squirrel monkeys failed to show the temporal myopia effect or a decrease in preference for the larger quantity as the absolute number of food items offered increased. Even when given choices of 8 versus 16 peanuts and 10 versus 20 peanuts, both monkeys significantly preferred the larger quantity. An examination of the monkeys' rates of consumption indicated that 20 peanuts were consumed over a 1- to 2-h period, with eating bouts separated by periods of nonconsumption. In Experiments 6A, 6B, and 7, food was either pilfered or replenished 15 min after an initial choice, so that choice of the smaller quantity led to more total food in the long run. These manipulations caused both monkeys to reduce choice of the larger quantity, relative to baseline choice. The results suggest that squirrel monkeys anticipated the future consequences of their choices.     

Reviews

Sam Pickering teaches English at the University of Connecticut     

Universities,public policy and economic development in Latin America: the cases of Mexico and Venezuela

Since the establishment of national university systems in Mexico and Venezuela, three principal demands have dominated the formulation of university policy: the ideological demand imposed by government rhetoric and national aspirations (a demand reflected in federal expenditure), the demand of the national economy for different areas and levels of professional expertise, and the broad-based political and social demand for upward mobility by way of university education. Tensions between these three demands in both Mexico and Venezuela have stemmed from the historically decreasing ability of Latin American economies to produce significant long-term social mobility into the middle classes. Although in the 1940s and 1950s the university systems played important roles in promoting social mobility, by the 1960s the number of professional jobs was much smaller than the number of university graduates. By the 1980s, the social role of the universities was severely limited by economic crisis brought on by a combination of dropping oil prices, debt, and government deficits. The major challenge currently facing Mexico and Venezuela in higher education policy is to restart economic growth to provide jobs for university graduates.     

'Noisy, fallible and biased though it be' (on the Vagaries of Educational Research)

Scholarship in education beyond school has developed largely outside university departments of education, and has rarely engaged systematically with the study of education in schools. The paper concentrates on three areas: adult education, higher education, and further education. The development of the extra-mural tradition meant that adult education was less an object of scholarly study than a means of spreading scholarship to the wider population, with important exceptions such as historical studies. Since the 1970s, the volume of research and postgraduate education in adult education in British universities has grown considerably. The study of higher education was marginal until the 1960s; its subsequent development was relatively slow until the 1990s, when the quality of university teaching came under wider external scrutiny. The study of further education and vocational training is characterised by disciplinary fragmentation, with much activity taking place in departments of psychology, economics, sociology and management, as well as in those former polytechnics that specialised in training further education teachers. The rise of integrative concepts such as lifelong learning suggest greater potential for cross-disciplinary scholarship that can engage the diverse body of those interested in teaching and research about this field.     

Advice to doctoral guidance committees from alumni at two universities

This investigation provided a comparative analysis of results of follow-up studies of graduates of doctoral programs at Ohio State and Michigan State universities. The same questionnaire survey and similar sampling procedures were used in both settings. The survey considered alumni perceptions of guidance committee activities, course work, comprehensive examinations, and dissertations. Most findings were consistent across both institutions (e.g., about one-fifth of the graduates from both universities wish they had taken more course work in research methodology). However, some striking contrasts were also found (e.g., the proportion of graduates who published articles based on their dissertations was 40% at one university and 23% at the other). The report offers recommendations for doctoral guidance committees suggested by the findings.     

The reading–science learning–writing connection: Breakthroughs,barriers, and promises

This article establishes a broad framework from which to interpret and evaluate the reading–science learning–writing connection. The presentation of breakthroughs, barriers, and promises is intended to outline the established links between, to identify current bottlenecks in thinking about, and to highlight productive inquiries into, print-based languages and scientific understanding. The ideas presented come from various disciplines connected to science education. The ideas are meant to be informative, provocative, integrative, supportive, and without hidden agenda.     

Teaching the design and interpretation of graphs through computer-aided graphical data analysis

Graphs are one of the primary means of exploration and communication in the practice of science, but students in science laboratories are customarily taught only the low-level mechanics of constructing a single kind of graph when given a table of information. The use of a microcomputer can relieve the drudgery of plotting, allowing students to pursue higher-level issues in the design and interpretation of graphs through repeated “thought experiments.” We introduced computer-assisted graphical data analysis to inner-city high school students with weak math and science backgrounds, emphasizing the dynamic manipulation of various kinds of graphs to answer specific questions. Drawing on extensive recordings and classroom observations, we describe examples of the performance of these students on open-ended problem-solving tasks in which graphs can be used to arrive at meaningful answers to applied data analysis problems.