Learning strategies are mental processes that are intentionally used by learners to acquire and apply new knowledge. They involve psychological processes like memory, reasoning, and perception. Effective strategies also make use of previous knowledge, metacognition, and motivation. Learning strategies can target memorization, meaningful learning, or complex processing of information. Cognitive skills important for learning include attention, understanding, preparation, and memory retrieval. Metacognitive skills are higher-order thinking skills used to self-regulate learning through planning, monitoring, control, and evaluation.