Research into the effects of "physical punishment" (e. g., spanking a child) has found that such discipline is associated with more behavioral problems in children. reading these findings, you might be tempted to tell your parents, "see, i told you that if you spanked me you would regret it! " unfortunately for you, your parents are both psychologists, and they are familiar with which of the six principles of scientific thinking

The development of simple stone tools by early hominids led to the ability to procure meat more efficiently. this in turn led to the change in diet that included larger amounts of protein. many scholars believe that this shift in diet was a significant part of how our ancient ancestors adapted so quickly to a varied set of environments, and thus were able to begin cultural development. this demonstrates the intimate connection between