This Text Attempts to Enable Readers With Little or No Prior Knowledge of Computing or Statistics, to Develop Reliable and Valid Tests and Scales for Assessment or Research Purposes. in This Revised Second Edition, Kate Loewenthal Has Updated the Text to Include Advances in Computer Software and Internet Resources. the Book Contains Detailed Guidelines for Locating and Constructing Psychological Measures, Descriptions of Popular Psychological Measures and Step-By-Step Instructions for Composing a Measure and Entering Data. Advanced Techniques Such As Factor Analysis, Analysis of Covariance and Multiple Regression Analysis Are Presented for the Beginner.