A well-designed research study with only one independent variable is ________ preferable to a poorly designed study with multiple independent variables

The ability of children and adults to naturally try to deal with their problems is known as

self-righting. intrinsic motivation. perseverance. effortful control.

On which of the following personality traits has research found stability across the lifespan?

a) Stability is found on virtually all dimensions of personality. b) Stability is found in extraversion and introversion. c) Stability is found in extraversion and introversion as well as cooperativeness. d) Stability is found on cooperativeness and openness to new experiences.