influence of psychological problems on the construction of the unique language acquisition device among iranian foreign instructors in the sla process

This study investigates the way psychological problems affect unique lad while acquiring a second language. a qualitative study and semi-structured interview, ranging from 50 to 70 minutes were employed. twelve professional l2 teachers have been interviewed to meet the study's findings. participants' quotes help the researchers find that psychological problems include four main properties, namely ocd, lack of concentration, stress, and other unique psychological problems affecting the process of sla. during the interview, the researchers found that these properties affect learners' rate of learning, interest, acquisition progress, concentration, self-confidence, interaction in the tl, motivation, and learning potential.