Semantic memory refers to the portion of long-term memory that processes ideas and concepts that are not drawn from personal experience. It includes general knowledge about the world, such as facts, meanings, and concepts. Because general knowledge sections of intelligence tests rely on this store of factual information rather than personal life events (episodic) or motor skills (procedural), semantic memory is the correct classification.

Sensory memory is the briefest form of memory, lasting only a fraction of a second. It's the initial brief storage of visual or auditory information after it enters the brain. This type of memory is crucial for processing and retaining sensory information.

The saving method measures retention even when the subject cannot consciously recall the material. Because the subject relearns the material faster than the first time, it demonstrates that the memory was stored implicitly. This method is considered an early way to quantify implicit memory, as it shows that past experiences influence current performance without conscious recollection.

Speed reading is primarily a technique for increasing the rate of information intake, which often comes at the expense of deep processing and comprehension. Effective memory enhancement requires cognitive engagement, such as active rehearsal, spacing out study sessions (distributive study), and creating meaningful associations (elaborative rehearsal). These methods ensure that information is deeply encoded into long-term memory, whereas speed reading often results in superficial processing that is insufficient for long-term retention.

Procedural memory, which involves motor skills and habits, is often the most resilient form of memory. It is stored in different brain regions, such as the cerebellum and basal ganglia, which are often less affected by the types of damage that impair episodic or semantic memory. This explains why individuals with amnesia may still retain the ability to perform complex physical tasks.

Iconic memory is a type of sensory memory that specifically refers to the brief storage of visual information. It lasts for only a fraction of a second, allowing the brain to process visual stimuli even after the physical object is no longer present in the field of vision.

Explicit memory, also known as declarative memory, involves the conscious recollection of information. It is divided into two main subtypes: episodic memory, which relates to personal experiences and specific events, and semantic memory, which relates to general knowledge and facts about the world. Both require conscious effort to retrieve, distinguishing them from implicit memory processes like classical conditioning.

Schemas are cognitive structures or frameworks that help individuals organize and interpret information. They act as mental templates based on past experiences, allowing us to process new information more efficiently by categorizing it into existing knowledge structures. This process is essential for memory retrieval and understanding complex environments.

Source monitoring is a cognitive process that involves determining the origins of our memories, knowledge, or beliefs. It allows individuals to distinguish between memories derived from external sources, such as actual events, and internal sources, such as thoughts or dreams. Failures in this process can lead to source monitoring errors, where one might misattribute the origin of a memory.

Encoding is the first step in the memory process. It involves the transformation of sensory input into a form that the brain can store and later retrieve. Without successful encoding, information cannot be effectively retained in long-term memory.