When children are learning a new activity, they often progress from talking out loud to themselves to whispering softly to silently moving their lips. These decreases in "thinking aloud" reflect a greater degree of

To be meaningful, a philosophical assumption should have some bearing on our view of reality. In other words, it should be

a) comprehensive. b) coherent. c) relevant. d) compelling.

Extensive research investigating the effects of sleep deprivation indicates that

a. there are no long-term physiological stress effects associated with sleep deprivation. b. sleep-deprived individuals have lowered sex drives. c. there are increases in physiological stress associated with sleep deprivation. d. there are long-term emotional effects associated with sleep deprivation. e. it has a marked effect on the ability to perform physical exercise.