You perfectly time the movement of your visible hand "knocking" on your head, while your hidden hand knocks on the table. The perception of the "knocking" sound coming from your head illustrates the Gestalt principle of contiguity

Based on the frequency of orgasm from masturbation or sexual intercourse, the peak of male sexual activity is age 18, while the peak for female sexual activity occurs a little later

a. True b. False Indicate whether the statement is true or false

Today, single people are more likely to be perceived as socially inadequate or as failures

Indicate whether the statement is true or false