"a researcher hangs a mobile over the crib of 4-month-old anya. when the researcher attaches anya s foot to the mobile with a long cord, anya can, by kicking, make the mobile turn. the turning of the mobile is an example of a(n) " reinforcer punishment unconditioned stimulus conditioned response

A reinforcer

Explanation:

A reinforce is something like that increases the likelihood of specific behavior or response will occur. Reinforcer occurs after the response or behavior that you want to increase that behavior. For example, a quiz is skipped after the summary of the prevention program is completed. The parents who want to increase the likelihood of their children for a specific behavior that when their child cleans the room, praises them and after clean the room the behavior changed of the child increase their self-efficacy related to that specific task performance. Even we all get the reinforce without getting in consciousness.  

omg stop xd you need to chi

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals