This document discusses 5 factors that affect language learning strategies: language proficiency level, motivation, learning styles, gender, and age. Higher proficiency learners tend to use more cognitive and metacognitive strategies, while lower proficiency learners rely more on communication and knowledge-based strategies. Motivation is found to be the single most important influence, with more motivated learners employing strategies more frequently. Learning styles also impact strategy use, such as extroverts preferring social strategies. Gender studies show females generally use strategies more than males. Age is a biological factor, with younger learners acquiring language faster than older ones due to a critical period of language development.