According to Piaget, the stage of cognitive development between 2 and 7 years of age, in which the individual becomes able to use mental representations and language to describe,
remember, and reason about the world, though only in an egocentric fashion, is the ______ stage.
a. concrete-operational c. sensory-motor
b. preoperational d. formal-operational
b
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Meredith is a doctor whose patients are participants in a research study testing a new cholesterol medication. Neither Meredith nor her patients knows whether the patients are receiving the new experimental drug or a placebo. This is an example of:
a. a confounding variable b. random assignment c. a double-blind experiment d. a single-blind experiment
Pressure occurs when
a. a deadline is approaching. b. a person has to slow down his or her activities. c. shock happens unpredictably. d. shock happens regularly.
When you have more than one independent variable, it is best to conduct ______.
A. one-way ANOVA B. two-way ANOVA C. independent samples t test D. within-subjects ANOVA
Which of the following is a component of adolescent egocentrism, according to Elkind?
A) Hypothetical-inductive reasoning B) Self-biography C) Concrete thinking D) The personal fable