The new edition of this market-leading textbook has been updated and revised to embrace current developments in this area of psychology. Changes to this edition include: Updated material, for example in the areas of quasi-experiments and qualitative research; improved design and greater use ofdiagrams, making the text easier to follow; structured questions that match the developments in A Level and provide superb opportunities for revision; inclusion of answers to in-text questions, so students can check their progress as they go along; clearer calculation tables -- ideal for those whoare not so good with mathematical concepts; a comparison between a 'good' and 'excellent' report, so students can understand what examiners are looking for; and finally, two synopses of qualitative reports. Above all, this book makes the potentially difficult area of psychology more understandable to its audience.