Week 2 Homework Excerse

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Week Two Homework Exercise

Answer the following questions covering material from Ch. 1–5 of Methods in Behavioral Research:

1. A researcher is interested in studying the effects of different levels of distraction—none, low, and high—on scores on a test of visual memory. Participants are randomly assigned to one of three conditions: no distraction, low distraction, or high distraction. All participants engage in a test of visual memory. What is the independent variable? What is the dependent variable? What is the purpose of random assignment to groups? What is the purpose of random assignment to groups?

The independent variable is, no distraction; the dependent variable is low distraction or high distractions (Cozby, 2009). The purpose of random assignment to groups is to create diversity and based on said diversity observe the dependent and independent variables affecting the decisions made during research studies by individuals (Cozby, 2009).

2. Define theory and explain its function. How does theory relate to the practice of psychology?

Theory is a systematic form of ideas about a particular topic or phenomenon presented (Cozby, 2009). Theory relates to the practice of psychology because through theory psychology researchers are able to theorize human behavior and the causes of said human behavior, said behaviors may include personality, and memory (Cozby, 2009). Also according to Cozby (2009) “theories organize and explain a variety of specific facts or description of behavior” (p. 20).

3. Define hypothesis and provide an example.

A hypothesis is a question or idea established to prove or disprove something, a hypothesis is designed to state something and therefore, set in motion a variety of steps that will be conducted in order to determine if said hypothesis may or may not be true (Cozby, 2009). For…...

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