The delay between a response and a consequence :

The answer to this question is Increasing; weakens the effects of both reinforcement and punishment..
The more delay being imposed between a response and a consequence, the more our brain not be able to find the correlation between that response and consequence. If the response and consequence happen instantly (for example we feel burnt when touching fire) that our body will most likely to remember the consequence of that certain response.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

producing or giving rise torelating to or engaged in the production of goods, crops, or other commodities.

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.