Memory loss can take the form of an encoding, storage, or retrieval failure. Other forms include retroactive and proactive amnesia. Search these terms for a more specific answer.
encoding failure
cognitive
Psychologists are concerned with human biology because it contributes to a human's mental state. Weight is one example of a biological characteristic that leads to depression.
Because they thought the subconscious could explain human behavior
Because they thought the subconscious could explain human behavior
Psychologists call ideas about how people thing, feel, or behave "theories" only if they are supported by good research. Generally, the purpose of psychological theories is to explain and to predict the future.
Psycho dynamic psychologists might explain altruistic behavior as stemming from unconscious motives, such as a desire to alleviate guilt or seek approval. They would view altruism as a way for individuals to satisfy unconscious needs and conflicts, rather than purely for the benefit of others.
Today, psychologists believe that mental processes come from a combination of genetics, biology, environment, and experiences. Understanding how these factors interact helps explain how thoughts, emotions, and behaviors are produced.
Fatherless children commit 90% of it. see link
develop general principles that help explain behavor in a variety of situations
purposeful forgetting
factors affecting forgetting