Individual Programmatic Assessment: Personality Development Paper

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Individual Programmatic Assessment: Personality Development Paper Tony Lopez PSYCH 645 August 3, 2015 Individual Programmatic Assessment: Personality Development Paper The purpose of this paper is to inform the reader of Individual personality development in terms of nature v. nurture and examines the effect on twins and on the influences that trait theory and biology, such as temperament have on personality development. Cultural factors have an effect on personality expression in terms of gender roles and group cultures such as collectivist and individualist cultures. Three personality models: 1. Biological-model 2. Five factor trait theory, and 3. Temperament model of personality can be adapted to account for variations in the personal, societal, and cultural factors discussed in this paper. How does the gene-environment interaction influence personality? A person’s genetic make-up in combination with a person’s environment form an individuals personality by interacting with each other. Abnormal or radical behavior could therefore “be explained by hereditary factors in combination with poor environmental conditions” (Oreland, Leppert, Hallman, Lindström, Nilsson, K., Sjöberg, R., …Öhrvik, J., 2006). There are two key components in serotonin regulation within the brain, an enzyme, monoamine oxidase A (MAO-A) and the serotonin transporter protein (5-HTT/SLC6A4), which transports the neurotransmitter serotonin from synapses to presynaptic neuron. Functional “variations in the promoter regions allow for division of both these genes into a short and a long allele” (Oreland et al., 2006) proven to exert low and high transcriptional activities, respectively (as cited in Sabol, Hu, & Hamer, 1998; as cited in Lesch, Bengel, Heils, Sabol, Greenberg, Benjamin, … Murphy, 1996). Transcription factor AP-2β has been suggested to influence brain
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