When you were first learning to make your bed, your parents told you that you did a good job when you got the bedspread pulled up, even though the bed was still a little messy. For the next week they showed you how to be a little neater each time you made the bed. What operant conditioning procedure did your parents use

Shaping                                  

Explanation:

Shaping: In psychology, the term "shaping" is described as one of the behavior modification technique and involve reinforcing process immediately one by one to reach to a closer approximations so that a targeted behavior is being reached. It is considered as one of the parts in the conditioning process.

Example: Language development, animal training, rehabilitation, etc.

In the question above, the given statement signifies the use of "shaping technique".

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.