article 8 human 8 human experiment major clinical study Humans 6 controlled study 5 female 5 learning 5 male 5 adult 4 education 3 perception 3 skill 3 Language 2 Learning 2 communication skill 2 data analysis 2 interview 2 language 2 pharmacy student 2 questionnaire 2 randomized controlled trial 2 self report 2 speech 2 Academic Performance 1 Adaptation, Psychological 1 Adjectives 1 Adolescent 1 Adult 1 Behavior Therapy 1