So far in this course we have dealt entirely with the evolution of characters that are controlled by simple Mendelian inheritance at a single locus. There are notes on the course website about gametic disequilibrium and how allele frequencies change at two loci simultaneously, but we didn’t discuss them. In every example we’ve considered we’ve imagined that we could understand something about evolution by examining the evolution of a single gene. That’s the domain of classical population genetics. For the next few weeks we’re going to be exploring a field that’s actually older than classical population genetics, although the approach we’ll be taking to it involves the use of population genetic machinery. If you know a little about the history of evolutionary biology, you may know that after the rediscovery of Mendel’s work in 1900 there was a heated debate between the “biometricians” (e.g., Galton and Pearson) and the “Mendelians” (e.g., de Vries, Correns, Bateson, and Morgan). Biometricians asserted that the really important variation in evolution didn’t follow Mendelian rules. Height, weight, skin color, and similar traits seemed to

Human biochemical genetics

Part I. Experimental Studies: 2. Experiment in psychology 3. Experiments on perceiving III Experiments on imaging 4-8. Experiments on remembering: (a) The method of description (b) The method of repeated reproduction (c) The method of picture writing (d) The method of serial reproduction (e) The method of serial reproduction picture material 9. Perceiving, recognizing, remembering 10. A theory of remembering 11. Images and their functions 12. Meaning Part II. Remembering as a Study in Social Psychology: 13. Social psychology 14. Social psychology and the matter of recall 15. Social psychology and the manner of recall 16. Conventionalism 17. The notion of a collective unconscious 18. The basis of social recall 19. A summary and some conclusions.

Remembering. A Study in Experimental and Social Psychology, Cambridge (University Press) 1964.

Genetics and analysis of quantitative traits

The Quark and the Jaguar

A prática educativa: como ensinar

This study had to aim to verify the relationship between performance in gross motor skill tasks and body mass index (BMI) in four to six year-old boys and girls. 27 children were analyzed, 16 boys and 11 girls, mean age of 5.64 ± 0.67 years. The children were submitted to the Test of Gross Motor Development-Second Edition (TGMD-2), proposed by Ulrich (2000) and to the Korperkoordinations-test fur Kinder (KTK), proposed by Kiphard and Schilling (1974). The punctuation obtained in the two tests was reduced to a scale common to both. The correlation between this scale and the BMI of the children was verified through the Spearman correlation test, with P < 0.05. No significant interaction was observed among variables when boys and girls were analyzed or when the analysis was conducted with gender distinction. Moreover, no interaction between the BMI and tasks which required higher demand of physical capacities was observed, which should be verified in further studies. It was possible to conclude from our results, that the performance of four to six year-old children in tasks which involved gross motor skill did not relate with BMI.

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Relação entre índice de massa corporal e habilidade motora grossa em crianças de quatro a seis anos

This article presents an outline of a non-equilibrium model, in which motor learning is explained as a continuous process of stabilization and adaptation. The article also shows how propositions derived from this model have been tested, and discusses possible practical implications of some supporting evidence to the teaching of motor skills. The stabilization refers to a process of functional stabilization that is achieved through negative feedback mechanisms. Initially, inconsistent and incorrect responses are gradually reduced, leading to a spatial-temporal patterning of the action. The adaptation is one in which new skills are formed from the reorganization of those already acquired through the flexibility of the system, reorganization of the skill structure, or self-organization. In order to provide learners with competency for adaptation, teachers should (a) guide students to learn motor skills taking into account that the stabilization of performance is just a transitory state that must be dismantled to achieve higher levels of complexity; (b) be clear which parts (micro) compose the skills and how they interact in order to form the whole (macro); (c) manipulate the skills in terms of their temporal, spatial, and/or spatiotemporal dimensions; (d) organize practice initially in a constant way, and then in a varied regimen (random) when the motor skills involve requirements of time and force; and, inversely for motor skills with spatial demands; and (e), provide a moderate frequency of feedback.

An adaptive process model of motor learning: insights for the teaching of motor skills.

Modularity and hierarchical organization of action programs in human acquisition of graphic skills.

The aim of this study was to investigate the effects of knowledge of results (KR) frequency and task complexity on motor skill acquisition. The task consisted of throwing a bocha ball to place it as close as possible to the target ball. 120 students ages 11 to 13 years were assigned to one of eight experimental groups according to knowledge of results frequency (25, 50, 75, and 100%) and task complexity (simple and complex). Subjects performed 90 trials in the acquisition phase and 10 trials in the transfer test. The results showed that knowledge of results given at a frequency of 25% resulted in an inferior absolute error than 50% and inferior variable error than 50, 75, and 100% frequencies, but no effect of task complexity was found.

Relative frequency of knowledge of results and task complexity in the motor skill acquisition.

O processo ensino-aprendizagem pode ser visto como um sistema constituido pela interacao de tres componentes - professor, aluno e materia - que tem por meta promover mudancas efetivas nos comportamentos, capacidades e competencias do aluno. Como numa visao sistemica do processo ensino-aprendizagem, a funcao de um determinado componente implica sempre o estabelecimento de relacao entre os dois componentes que restam, o papel principal do professor e estabelecer relacao entre o aluno e a materia. Neste contexto, a questao central e saber em que se basear para estabelecer essa relacao. O presente ensaio parte da assuncao de que o conhecimento sobre o desenvolvimento motor constitui um elemento fundamental quando a materia de ensino e o esporte, discute uma fase desse processo que tem sido sistematicamente esquecida procurando identificar as suas possiveis causas e consequencias e apresenta algumas sugestoes para trabalhar com essa fase.

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Luciano Basso

Papers

Relação entre índice de massa corporal e habilidade motora grossa em crianças de quatro a seis anos

An adaptive process model of motor learning: insights for the teaching of motor skills.

Modularity and hierarchical organization of action programs in human acquisition of graphic skills.

Relative frequency of knowledge of results and task complexity in the motor skill acquisition.

O ensino do esporte para crianças e jovens: considerações sobre uma fase do processo de desenvolvimento motor esquecida