Which of the following is true of a 2 × 3 design?
a. It has 1 variable with 2 levels and 1 variable with 3 levels.
b. It has 1 variable with 6 levels.
c. It has 2 variables with 3 levels.
d. It has 2 variables with 2 levels and 3 variables with 3 levels.
Ans: A
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In an experiment, which of the following do researchers manipulate?
A. replication group B. independent variable C. control group D. dependent variable
In the classic study by psychologist Harriet Rheingold, extinction of infant vocalizations occurred when the researcher
a. provided encouraging sounds, smiles, and touches. b. passively observed each infant. c. used punishment. d. provided a negative reinforce.
Emma calls her husband every day at work to ask him what she should make for dinner. She spends her days at her mother's because she worries something will go wrong in her own home that she won't be able to handle. Even though she is artistically talented, Emma has never enrolled in an art class or used her natural talent, because she believes her work isn't that good. Emma's most likely diagnosis is __________.
A. borderline personality disorder B. dependent personality disorder C. schizoid personality disorder D. paranoid personality disorder
A biopsychosocial perspective ________ to understand adolescent health
A) emphasizes psychological and social factors, instead of biological factors B) emphasizes biological factors, instead of psychological and social factors C) focuses on the interplay of biological, psychological, and social factors D) focuses on social transmission of poor health decisions, such as smoking