Final answer:
The second principle of effective conditioned reinforcement requires the conditioned reinforcer to be highly salient, meaning it must be noticeable and stand out when used to increase the likelihood of a response to an unconditioned reinforcer.
Step-by-step explanation:
According to the second principle of effective conditioned reinforcement, we will ensure that our conditioned reinforcer is highly salient, that is, it stands out and will be easily noticed when it occurs. A reinforcer is any stimulus that, when presented after a response, increases the likelihood of that response occurring again in the future. To be effective, a conditioned reinforcer must be distinctly noticeable and consistently associated with the unconditioned reinforcer. For example, in a classroom setting, verbal praise or a token system can serve as effective conditioned reinforcers for desired student behaviors as long as they are presented promptly and conspicuously.