When studying developmental psychology, _____ exemplifies the psychosocial domain

Research findings become more convincing when the results are statistically significant and when the findings

a. showed a positive correlation. b. showed a negative correlation. c. constitute a natural clinical trial. d. are replicated by other researchers.

Variability expected on the basis of measurement error is best represented by

a) the standard error of measurement b) the reliability coefficient c) the standard deviation d) the variance of the test