Language-learning aptitude

Language learning aptitude refers to the "prediction of how well, relative to other individuals, an individual can learn a foreign language in a given amount of time and under given conditions". Foreign language aptitude itself has been defined as a set of cognitive abilities which predicts L2 learning rate, or how fast learners can increase their proficiency in a second or foreign language, and L2 ultimate attainment, or how close learners will get to being able to communicate like a native in a second or foreign language, both in classroom and real-world situations.

Source: Wikipedia — Language-learning aptitude (CC BY-SA 4.0)