An approach that uses incorporates differing but complementary views (e. g., biological, psychological, and social-cultural) to explain a given phenomenon.

The answer to the blank space in the question is levels of analysis. Levels of analysis refers to how a researcher can use multiple approaches (there are three commonly used one: biological, cognitive, and sociocultural) to explain a psychological phenomenon.

For example, when explaining the concept of memory, a researcher can refer to how the process occurs in the brain (biological), how the process occurs in the mind (cognitive), and how our surroundings influence the type of memory that we encode in the brain (sociocultural).

answer; face validity;