Which of the following events does NOT occur during the fetal stage?
A) The heartbeat can be detected with a stethoscope.
B) The organism grows dramatically in size and weight.
C) All major organ structures appear.
D) First arm and leg movements occur.
C
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Babies whose mothers smoke tobacco during pregnancy are more NOT likely to have:
A) lower birth weights. B) perceptual problems. C) attention deficits. D) distinctive facial features.
Before research can proceed, the hypothesis must be made more ________ through the use of operational definitions
a. empirical b. accurate c. precise d. theoretical
Jackie Robinson, the first African-American to play in the major leagues, was told all his life that he was inferior
Yet time after time he was able to outperform many of the other players on the field. Which potential problem did Jackie Robinson overcome? A) Test bias B) Heritability C) Low self-esteem D) Stereotype threat
During adolescence the ratio of excitatory synapses to inhibitory synapses changes from 7:1 to:
A) 1:1. B) 1:7. C) 6:1. D) 4:1.