Did you know that correlations are just observations in an experiment and there is no way to prove that one caused the other one.
Science isn't about proving anything. It's about probability. If there is a pattern in something, such as placebo having an effect on a patient, it's probable that there is a correlation.
And yes, evolutionary psychology explains human behavior.
Evolutionary psychology (EP) is an approach in the social and natural sciences that examines psychological traits such as memory, perception, and language from a modern evolutionary perspective. It seeks to identify which human psychological traits are evolved adaptations, that is, the functional products of natural selection or sexual selection. Adaptationist thinking about physiological mechanisms, such as the heart, lungs, and immune system, is common in evolutionary biology. Evolutionary psychology applies the same thinking to psychology, arguing that the mind has a modular structure similar to that of the body, with different modular adaptations serving different functions. Evolutionary psychologists argue that much of human behavior is the output of psychological adaptations that evolved to solve recurrent problems in human ancestral environments.
It uses evolution to EXPLAIN/IDENTIFY why humans behave the way we do. How can you not get this.