PS275 Study Guide - Midterm Guide: Pituitary Gland, Dwarfism, Neonatal Behavioral Assessment Scale
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20) validity the extent to which a measuring instrument accurately reflects what the researchers intended to measure. (p. 10) visual/spatial abilities abilities to mentally manipulate or otherwise draw inferences about pictorial information. (p. 5) Freud"s theory that states that maturation of the sex instinct underlies stages of personality development, and that the manner in which parents manage children"s instinctual impulses determines the traits that children display. (p. Freud"s term for feelings, experiences, and conflicts that influence a person"s thinking and behaviour, but lie outside the person"s awareness. (p. 42) zone of proximal development. Down syndrome a chromosomal abnormality (also known as trisomy-21) caused by the presence of an extra 21st chromosome; people with this syndrome have a distinctive physical appearance and are moderately to severely retarded. (p. X chromosome the longer of the two sex chromosomes; normal females have two x chromosomes, whereas normal males have but one. (p. 79)
