Wingfield's 1984 and 1987 studies of song sparrows (Melospiza melodia) demonstrated that circulating levels of testosterone waxed and waned in parallel with changing patterns of male territorial aggression. These studies were examples of which of the following types of methodology?
A) correlational
B) interventional
C) monitoring
D) organizational

Question

Quizplus · Accepted Answer

Wingfield's studies showed a relationship between testosterone levels and aggression without manipulating variables, which is characteristic of correlational research.

Wingfield's 1984 and 1987 Studies of Song Sparrows (Melospiza Melodia)