Psychological aspects Attitudes 23 Employees 16 Job satisfaction 16 Psychology 16 Music 13 Organizational commitment 13 Research 11 English language 10 Social aspects 10 Study and teaching 10 Job stress 9 Organizational behavior 9 Work 9 Instruction and study 8 Sports 8 Students 8 Civil service 7 Consumers' preferences 7 Foreign speakers 7 Health aspects 7 Rating of 7 Teachers 7 Academic achievement 6 Advertising 6 College teachers 6 Human engineering 6 Officials and employees 6 College students 5 Consumers 5