Scientific coats of arms

With their mythical creatures and arcane symbolism, coats of arms seem to have little connection with modern science. Yet despite its chivalric origins, the ancient language of heraldry has long fascinated famous scientists. Although this idiosyncratic tradition was parodied by Victorian geologists, who laughingly replaced unicorns and griffins with images of dinosaurs that they had recently discovered, it has been perpetuated since by Ernest Rutherford, who liked to present himself as a new alchemist.     

Appendix B: Potential Effects on Children's Performance of Features of the Research Design

In addition to the variables of interest in this research (namely, age, delay, sequence type, mode of experience, and verbal reminders), children's performance may have been affected by a number of features of the research design. This Appendix is a report of the results of analyses of three potential influences on the children's performance. First, we examined the possibility that the particular experimenter who conducted the session might have affected the children's performance. Second, we examined the possibility that conclusions regarding children's recall of the event sequences were qualified by specific event sequence effects. Third, we examined the possibility that differences in the lengths of the child-controlled response periods might account for the patterns of effects observed. Although in each case some effects obtained, in no case did the findings present substantive qualifications to the major patterns described in the body of the text.     

Educational administrative inservice education: An outline of a grounded theory

This article is based on a paper prepared for presentation at the Annual Meeting of the American Educational Research Association, April 5–9, 1988, New Orleans.     

A Path Analysis of Nutrition,Stimulation, and Child Development Among Young Children in Bihar,India

Nutrition plays an important role in the development of a child, particularly in low‐ and middle‐income countries where malnutrition is often widespread. The relation between diet, hemoglobin, nutritional status, motor development, stimulation and mental development was examined in a cross‐sectional sample of 1,079 children 12–18 months of age living in rural Bihar, India. Path analysis revealed associations between (a) length‐for‐age z‐scores and motor development, standardized β (β) = .285, p < .001, and (b) motor and all mental development outcomes (language: β = .422; personal‐social: β = .490; memory: β = .139; and executive function: β = .072, all p < .001). Additionally, stimulation was significantly associated with language scores and hemoglobin concentration with memory. These findings inform interventions aimed at improving child development in Northern India.     

Anticipatory contrast as a function of access time and spatial location

Intake of a 0.15% saccharin solution was suppressed when it was followed by a 32% sucrose solution in brief daily pairings. With equal access durations to the two solutions, intervals of intermediate duration (2 or 3 min) produced a larger contrast than more extreme intervals (1 or 10 min). There was no evidence of inhibition of delay with the 10-min interval (Experiments 1A and 1B). When access times were asymmetrical, longer access time to the first solution reduced contrast, whereas longer access time to the second solution enhanced contrast (Experiment 2). Contrast was greater when the two solutions were presented at consistent and separate spatial locations than when location was changed randomly or when both solutions were presented in sequence at the same location. However, a degree of contrast occurred in all conditions (Experiment 3). Experiment 4, conducted with the solutions in opposite arms of a T-maze, showed that anticipatory approach to the location correlated with the 32% sucrose solution developed prior to lick suppression on the saccharin solution. However, within daily sessions, there was a reliable increase in contrast without correlated changes in anticipatory-approach behavior. Access-time effects were attributed to altered reward values, whereas spatial-separation effects suggest that goal-directed responses contribute to, but do not cause, anticipatory contrast.     

Social Interaction in Same and Cross Gender Preschool Peer Groups: a participant observation study

About a third of play groups observed in a part‐time and full‐time early childhood centre were of mixed gender and two‐thirds were same gender. Mixed gender groups were larger than same gender groups and kindergarten (part‐time) groups were larger than childcare (full‐time) centre groups. In the kindergarten, outdoor play was much more common and there was a significant difference in boys preferring to play outdoors, followed by mixed groups and then girls. In both centres boisterous play was more likely in boys’ groups than girls’ groups, with mixed groups more similar to boys’ groups in the predominance of boisterous play. Boys’ groups in both centres exclusively used male themes for pretend play, while girls mostly used female themes and an occasional male theme. Mixed gender groups used male themes almost as much as male groups, but rarely or never used female themes. There was more physical conflict and rejection in mixed groups, than boys’ groups and none in girls’ groups in the kindergarten. There was more adult involvement in girls’ groups than in boys'groups in both centres, but mixed groups had an intermediate amount in the kindergarten and slightly more than girls in the childcare centre. Boys enjoyed noisy, rough and tumble play, competition for dominance, stereotyped male themes and sometimes actively rejected the presence of the researcher. Girls preferred quiet adult‐structured table activities and supportive conversations over activities with peers and adults. While there were examples of successful cross‐gender co‐operative play, there were also examples of the breakdown of reciprocity due to contrasting styles of play.