Turn on your Mac, then immediately press and hold the D key on your keyboard. Keep holding until you see a screen asking you to choose your language. When Apple Diagnostics knows your language, it displays a progress bar indicating that it's checking your Mac: Checking your Mac takes 2 or 3 minutes. If any issues are found, Apple Diagnostics suggests solutions and provides reference codes. Note the reference codes before continuing. Choose from these options: To repeat the test, click âRun the test againâ or press Command (â)-R.
Freebase(0.00 / 0 votes)Rate this definition: Peer pressure. Peer pressure is influence that a peer group, observers or individual exerts that encourages others to change their attitudes, values, or behaviors to conform to group norms.
This is what we refer to as peer pressure -- the pressure to conform to the behaviors, attitudes, and personal habits of the group.. In many cases, there are serious risks involved. Letâs look at some common situations. Think about what you would do in each:  1 My friends told me about this party at this abandoned warehouse on Friday night.  2 This older guy at church that I really like smokes cigarettes.  3 My girlfriend keeps pleading with me to go all the way with her.