Mr. Johnson wants a hyperactive boy to be able to sit quietly for at least 15 minutes at a time. To do this, he begins praising the boy for sitting still for one minute, then for two minutes, and then only for four minutes, and so on. Mr. Johnson's strategy reflects which one of the following concepts?

a. Shaping
b. Generalization
c. Discrimination learning
d. Intermittent reinforcement

*blinks* youforgotyourname**

In financial aspects, a depression is a sustained, long haul downturn in monetary movement in one or more economies. it is a more extreme monetary downturn than a recession, which is a slowdown in financial action through the span of a typical business cycle. a depression is an irregular and extreme type of recession. so depression is always followed by recession but it is not correct to state that a depression always follow a recession.