Freudian psychology advances the view that some forgetting is caused by repression or suppression. In repression or suppression, a memory is pushed out of reach because the individual does not want to remember the feelings associated with it. Repression is an unconscious form of forgetting while suppression is a conscious form.

Forgetting information does not mean it is gone forever. Sometimes it is still there, just inaccessible.

Each of the theories of forgetting implies that when a person forgets something, it is not actually lost. Rather, it is simply unavailable for recall. The instructor’s problem is how to make certain that the learner’s learning is readily available for recall. The following suggestions can help.

Teach thoroughly and with meaning. Material thoroughly learned is highly resistant to forgetting. This is suggested by experimental studies and it also was pointed out in the sections on skill learning. Meaningful learning builds patterns of relationships in the learner’s consciousness, which is one reason to conduct SBT. In contrast, rote learning is superficial and is not easily retained. Meaningful learning goes deep because it involves principles and concepts anchored in the learner’s own experiences. The following discussion emphasizes five principles, which are generally accepted as having a direct application to remembering.

Responses that give a pleasurable return tend to be repeated. Absence of praise or recognition tends to discourage, and any form of negativism in the acceptance of a response tends to make its recall less likely.

As discussed earlier, each bit of information or action, which is associated with something to be learned, tends to facilitate its later recall by the learner. Unique or disassociated facts tend to be forgotten unless they are of special interest or application.

People learn and remember only what they wish to know. Without motivation there is little chance for recall. The most effective motivation is based on positive or rewarding objectives.

Although people generally receive what is learned through the eyes and ears, other senses also contribute to most perceptions. When several senses respond together, a fuller understanding and greater chance of recall is achieved.

Each repetition gives the learner an opportunity to gain a clearer and more accurate perception of the subject to be learned, but mere repetition does not guarantee retention. Practice provides an opportunity for learning, but does not cause it. Further, some research indicates that three or four repetitions provide the maximum effect, after which the rate of learning and probability of retention fall off rapidly.

Along with these five principles, there is a considerable amount of additional literature on retention of learning during a typical academic lesson. After the first 10–15 minutes, the rate of retention drops significantly until about the last 5–10 minutes when learners wake up again. Learners passively listening to a lecture have roughly a five percent retention rate over a 24-hour period, but individuals actively engaged in the learning process have a much higher retention. This clearly reiterates the point that active learning is superior to just listening.

A mnemonic uses a pattern of letters, ideas, visual images, or associations to assist in remembering information. It is a memory enhancing strategy that involves teaching learners to link new information to information they already know. Its chief value lies in helping learners recall information that needs to be recalled in a particular order by encoding difficult-to-remember information in a way that makes it easier to remember. Research shows that providing learners with memorization techniques improves their ability to recall information. Mnemonics include but are not limited to acronyms, acrostics, rhymes, or chaining.

Acronyms form a word from the first letters of other words. For example, “AIM” is the acronym for Aeronautical Information Manual.