How is it possible for neurons in the central nervous system to reproduce or regenerate? What is this process called? Can anything help or hinder this process?
What will be an ideal response?
A good answer will include the following key points:
• Animal studies showed that severed axons in the spinal cord can regrow if you treat them with certain nervous system chemicals.
• Neurogenesis is the production of new neurons from immature stem cells; the human brain and other body organs contain stem cells.
• Many of these cells, including those in brain areas involved in learning and memory, seem to divide and mature throughout adulthood.
• Animal studies suggest that physical exercise, effortful mental activity, and an enriched environment promote the production and survival of new cells.
• Aging and stress can inhibit their production and nicotine can kill them.
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In both the classical and operant procedures, generalization will be greatest to stimuli that
a. most closely resembles the original training stimulus. b. are the most different from the original training stimulus. c. occur early in the generalization testing procedure. d. occur last in the generalization testing procedure. e. were blocked during training.
In the text, the author describes an experiment in which a group of children was told a hypothetical story in which an adult punished a neutral act, such as a child practicing a musical instrument. Afterward, the children classified the act of playing a musical instrument as bad behavior. This experiment lends credence to the power of:
A. cognitive dissonance. B. modeling. C. the "blank slate." D. reinforcement.
Four-year-old Rebecca shouts loudly that her teacher forgot to let her have a turn to share a toy with the class. Rebecca always makes sure her needs are met and she speaks loudly if necessary. Also, Rebecca loves to be first in line
In games, she feels the need to win and when she doesn't win, she sulks. Rebecca's behavior is an example of a(n) ___________ orientation. a. individualistic c. economic b. spatial d. collectivistic
Huela is pregnant and talks to her physician about assessing the health of her unborn child. The physician recommends a test, which combines a blood test and ultrasound sonography. Which procedure was recommended?
a) amniocentesis b) sonogram c) first-trimester screen d) embryoscopy