PSY_1_Development

PSY_1_Development - Development Nature-Nurture Problem Is a...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Development
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
“Nature-Nurture Problem” Is a trait due to heredity or to the environment? Sometimes, the problem is stated as maturation vs. enculturation . Environment can be: chemical pathogen psychological pre-, peri-, or post-natal
Background image of page 2
“Nature-Nurture Problem” Error is to state the problem as either-or: Environments can release effects of genes. Genes can control susceptibility to environment. (e.g., Baldwin Effect ) Effects of genes vs. environment can rarely be disentangled.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The Psychosocial Environment in Utero
Background image of page 4
The Psychosocial Environment in Utero
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
“Nature-Nurture Problem” Whether a trait is genetically influenced does not imply that is it fixed (non-plastic): in deprivation dwarfism, malnutrition can override height, which is usually fixed. in phenylketonuria (PKU), a simple dietary change can bypass a genetic flaw. in carotenism people can turn orange by eating too many carrots, or with too much sun they can turn redder and darker. Trait plasticity : how much can the environment affect a trait?
Background image of page 6
Waddington’s “Epigenetic Landscape”
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Infant Reflexes
Background image of page 8
Maturation and Bodily Proportions
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Brain Development Neurons are added in the fetal brain at up to 250,000 per minute. By the time of birth, the human brain contains almost all the neurons it ever will (about 10 10 ). However, some neurogenesis occurs throughout the lifespan. Connections among neurons (synapses) are created ( synaptogenesis ) and then destroyed ( apoptosis ) in waves that amount to neural sculpting by experience. Synapses can be made at rates up to 40,000 synapses per sec, and eliminated at rates up to 100,000 per sec. The human brain contains the most synapses it ever will at about
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 32

PSY_1_Development - Development Nature-Nurture Problem Is a...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online