CHAPTER 1Professionals in behavioural sciences rely on methods of science to gather & interpret information. Psychologists would observe & compare - need to decide what characteristics to observe. Need to record OBJECTIVE MEASUREMENTS of these characteristics rather than rely on SUBJECTIVE INTERPRETATIONS or potentially biased reports. Provides a carefully developed system for answering questions - answers we get - ACCURATE & COMPLETE as possible. ANALYZE & EVALUATE. Determine to what extent EVIDENCE SUPPORTS CONCLUSIONS.*Research methods - help understand abbreviated descriptions of studies.*Style is determined by principles of research methodology.*LOGICAL & OBJECTIVE method - obtaining information - making decisions based on information.