Principles of BLOA

There are four principles that define the Biological Level of Analysis. At least, there are according to Meltzer. The Internet says it's three. But Meltzer is probably a lot more reliable.

The four main principles are (non-verbatim): Because the BLOA assumes that all behavior is a result of biological factors, these four principles allow us to look at it in a more well-defined way.
 * 1) Behavior is the product of biological processes from the nervous and endocrine systems
 * 2) Animal research may inform our understanding of human behavior
 * 3) Patterns of behavior are based on evolution
 * 4) Patterns of behavior are based on genetic makeup