During childhood:
a. some synapses are strengthened.
b. some synapses weaken and wither away.
c. both a and b
d. neither a nor b
c?
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Which characteristic is necessary for an extraneous variable to become a confounding variable? a. It must change systematically from one participant to the next
b. It must change systematically when the independent variable is changed. c. It must have no systematic relationship with the dependent variable. d. It must have no systematic relationship to the independent or dependent variables.
Explain the proximal similarity model with an example
What will be an ideal response?
The main difference between early and late-selection models of attention is
a. where the bottleneck in information processing occurs. b. the role of the sensory store in information processing. c. the role of short-term memory in information processing. d. the role of long-term memory in information processing.
What prenatal technique can be used to examine the status of the fetus by taking samples of the cells that are beginning to form the umbilical cord?
A. amniocentesis B. chorionic villus sampling C. blood screening D. ultrasound