Iranian Educational Psychology Association Iranian Journal of Learning and Memory 2645-5447 2 6 2019 08 01 The Role of Informal English Language Teaching in Childhood on English Knowledge and Attitude towards the English Language in Adulthood 27 31 93234 10.22034/iepa.2019.165525.1081 EN Marzieh Mobtada Department of Educational Psychology, Islamic Azad University, Science and Research Branch, Tehran, Iran Ali Akbar Seif Department of Educational Psychology, Islamic Azad University, Science and Research Branch, Tehran, Iran Journal Article 2019 01 02 The purpose of this study was to investigate the role of informal English language teaching in childhood on English knowledge and attitude towards English language in adulthood. The research design was of a causal-comparative nature. The statistical population included all the first-year undergraduate students of Islamic Azad Universities who had been studying humanities in the academic year of 2015-2016. A sample size of 200 students was selected by multistage cluster sampling method. The research tools were English knowledge test and attitude questionnaire which were developed by the researcher.  Statistical analyses using MANOVA was implemented. Findings revealed that the informal English language teaching in childhood, as compared to its absence, leads to more English knowledge and improves attitude towards the English language in adulthood. Based on the obtained results, it is recommended that English language learning should not only start at an earlier age but it should also and be taught informally. https://journal.iepa.ir/article_93234_158956a2201068df7347ab656a83b7bc.pdf