PSY100H1 Lecture Notes - Lecture 10: Ecological Niche, Lamarckism, Biopsychosocial Model
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PSY100H1 Full Course Notes
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The final approach is the dynamical systems approach. Genes not altered by environment, no lamarckian evolution, but gene activity is altered by environment and behaviour within the environment. Two types: of genes: structural- (they code for how your cells make enzymes and proteins) and regulatory- (turn on and off structural genes, they regulate gene activity) Most traits, especially cognitive ones like intelligence, are polygenetic in nature, based on many different genes operating together, and they are always switching up the combinations they are being played. So behaviour within the environment can alter the pattern of which sets of genes are turned off or on. Gives the biological system tremendous resiliency while being still quite efficient in its processing. 3 basic models of this dynamic interaction between biology and environmentally embedded behaviour. Range argues that biology determines the range for a particular trait and then the environment sets the specific value within the range, eg. , height and available nutrition.
