In general, biologists who speak of sex-linked genes are typically referring to genes on ____

If a researcher wanted to know how loudly a person must speak in order to be heard above the noise of two other simultaneous conversations, the researcher would likely measure the ________

a. difference threshold b. marginal intensity c. relative magnitude d. absolute threshold

Freud's theory was the first to stress the influence of __________ on development

A) observational learning B) rewards and punishment C) cultural norms D) the early parent–child relationship