बुद्धि के अपने समूह कारक सिद्धांत (Group Factor Theory) में, लुई थर्स्टन ने 'तर्क क्षमता' (Reasoning Ability) को कितने अलग भागों में उप-विभाजित किया था?

Vikram is a professional athlete who has won many accolades for his country. Recently, he won a gold medal in a world competition. However, he has problems when he talks to his family and friends and cannot forge a successful relationship of any kind. Which of the following theories can explain this?

How many factors or primary mental abilities govern intelligence according to Louis Thurstone's final Group Factor Theory?