PSYC*3140 Lecture Notes - Lecture 2: Axon Terminal, Brainstem, Somatic Nervous System
Document Summary
Attributes causes of behaviour to single linear cause. Attributes causes of behaviour to several causes. Developmental critical periods: more or less reactive to given situations, when combined with other factors can lead to pd"s. Pd"s are caused by nature/biology and by nuture/psychosocial factors but causes of abnormal behaviour are complex. Need to consider interaction of all relevant dimensions: genetic contributions, role of the nvs, behaviour and cognitive processes, emotional influences, social and interpersonal influences, developmental factors. Long molecules of dna at various locations on chromosomes: everyone has unique set of genes except identical twins. 23 pairs of chromosomes and each parent gives one chromosome to each pair. 22 pairs for development of brain/body and 23rd pair are sex chromosomes. Abnormalities can be from error in sex chromosome pairing and wrong ordering of genes. Genome: complete set of genes: humans have 20 000-25 000 genes. New developments in study of genes and behaviour.
