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Psychology Chapter 2

Psychology Chapter 2 - Chapter 2 What does empirical mean...

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Chapter 2 What does empirical mean? Empiricism is the premise that knowledge should be acquired through observation. What is a hypothesis? A hypothesis is a tentative statement about the relationship between two or more variables. Steps in a scientific investigation 1. Formulate a testable hypothesis 2. Select the research method and design the study 3. Collect the data 4. Analyze the data and draw conclusions 5. Report the findings What is a theory? A theory is a system of interrelated ideas used to explain a set of observations. Data collection techniques Data collection techniques are procedures for making empirical observations and measurements. Commonly used techniques include direct observation, questionnaires, interviews, psychological tests, physiological recordings, and examination of archival records. What is an experiment? An experiment is a research method in which the investigator manipulates a variable (independent variable) under carefully controlled conditions and observes whether any changes occur in a second variable (dependent variable) as a result. Independent variables A condition or event that an experimenter varies in order to see its impact on another variable.
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