Which research technique is best at eliminating confounding variables?

A. preexperiment
B. true experiment
C. quasi-experiment
D. correlational


Answer: B

Psychology

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The study by Bar-Haim et al. (2006) showed that between 3 and 6 months of age, infants __________.

A. prefer faces of people from their own racial group unless they are frequently exposed to people from other racial groups B. show no preference for looking at faces of people from one racial group over another C. prefer to look at faces of people from a different racial group than their own, due to the novelty value D. become confused when shown faces from different groups and begin crying

Psychology

If this value is low enough in our Pearson r test (i.e., at our chosen alpha level or lower), we will use that as evidence against the null hypothesis.

A. p value B. R2 C. sum of products D. t score

Psychology

Lev Vygotsky emphasized:

a. children's need for contact comfort on early attachment relationships. b. the sociocultural influences on children's cognitive development. c. the shared grammatical structure underlying all spoken languages. d. the anxiety babies and toddlers feel when separated from a primary caregiver.

Psychology

Briefly describe the logic of the analysis of variance or F-test for a single-factor random groups design.

What will be an ideal response?

Psychology