Sampling with replacement is associated with ______ changes in probabilities from one selection to the next.

In general, the relationship between age and self-reported happiness is

(a) older people are, on the average, happier because they tend to have more money (b) younger people are, on the average, happier because they see themselves as having more years yet to live (c) there is no significant correlation between age and reported happiness (d) there is a U-shaped relationship; young and old people are happiest, middle aged people report the least happiness

Baby Lucy is 8-months-old. She picks up a toy in her crib and accidentally hits her crib with the toy, making an interesting noise

She begins to drag the toy back and forth against the sides of the crib's railing, which produces another different and interesting sound. This prompts Lucy to continue repeating the action over and over again. Piaget would say that this is an example of a) Substage 1: Simple reflexes. b) Substage 2: First habits and primary circular reactions. c) Substage 3: Secondary circular reactions. d) Substage 4: Coordination of secondary circular reactions.