Academic Achievement plays a vital role in life and it is the most important goal of education in the present age of competition. The desire for high level of achievement puts a lot of pressure on students, teachers and in general the education system as well. The academic success of children is the result of cognitive aspects of personality and is the result of various factors.Cognitive style or "thinking style" is a term used in cognitive psychology to describe the way individuals think, perceive and remember information. Study habits also play a very important role in the life of students. Success and failures of each individual depends upon his own study habits.The desire to pass by all means 'without studying effectively usually' leads into examination malpractices, thus there is a need for developing good and effective study habits among students. This book finds out the way how the Cognitive styles and Study habits effect the Academic achievement of students.