Mike Cardwell 
Dictionary of Psychology [PDF ebook] 

Psychology as a subject is notorious for its often confusing use of language, particularly as many words that have one meaning in common everyday language have quite a different meaning when used as specialist terms in psychology. Dictionary of Psychology is an A-Z guide to key terms in the subject. Each entry begins with a clear, one-sentence definition and is followed by explanation and examples. Entries are developed in line with the relative importance of the topic covered. For many of the more central topic areas, further commentary is included to assist the reader in acquiring a critical understanding of the topic in question. Entries are carefully cross-referenced, and the format makes the Dictionary of Psychology very easy to use.