Explain scientific theories in detail.

Social psychologists are not content to know what people do; they also want to know why they do it. That is why psychologists derive their hypotheses from theories.Theories are composed of constructs (abstract ideas or concepts)that are linked together in a logical way. They are called "constructs" because the researcher must construct them or build them up by specifying their dimensions. For example, the construct of "aggression" may have multiple dimensions such as physical versus verbal, direct versus indirect, passive versus active. A theory is more than a hunch-it explains why something is expected to occur.
In science, a theory is not just a guess. It's a well-substantiated, well-supported, well-documented explanation for observations. For example, just because it's called the "theory of gravity," doesn't mean that it is just a guess. The theory of gravity is based on well-established physics principles, has been tested many times, and has been supported by many observations. Likewise, social psychological theories are not just guesses or hunches about human behavior.