Which situation is considered reinforcement?                 a.  earning an "a" despite not studying or listening in class      b.  receiving a " you" from somebody after doing something nice      c.  the inability to get a job due to prior criminal history      d.  refusing to leave a tip for service that was bad

When 17-year-old dominik visits with his primary care physician for the first time, he is not sure what information he needs to provide. to ensure adequate care, which details should he share with his doctor? check all that apply. his brother and sister are both adopted. his grandfather smoked cigarettes until he was 25 years old. his mother was diagnosed with cancer. he is having unprotected sex with his girlfriend. he has been excessively tired for the past two months.

Measuring your progress by weight (only)? a: the fit of your clothes b: bathroom scale c: body fat scale d: body fat caliper

The purity of ecstasy is always in question, why? (short answer)