Chapter_11_-_Factorial_Designs

Chapter_11_-_Factorial_Designs - PSYC 310 Chapter 11...

Info icon This preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Factorial Designs Factorial Designs PSYC 310 – Chapter 11 PSYC 310 – Chapter 11
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Factorial Designs Factorial Designs The methods we have been considering so far allow us to examine the relationship between one IV and one DV. When there is more than one IV in a study, we refer to the IVs as factors. the effects of more than one IV on a given DV the interactions between the IVs - combined effects A factorial design allows us to examine:
Image of page 2
Factorial Designs Factorial Designs Used often in psychological research because human behavior is complex in nature and influenced by a variety of interacting factors. Factorial designs have ecological (real world) validity and thus high external. Factors contributing to a poor exam outcome: bad mood argument w/partner lack of sleep not studying enough
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Factorial Designs Factorial Designs We could examine each factor in a separate experiment: Or we can consider both questions in one factorial study: 1. Effects of sufficient / insufficient sleep on exam performance. 2. Effects of sufficient / insufficient study time on exam performance. 3. What are the combined effects of sleep time and study time on exam performance?
Image of page 4
Factorial Designs Factorial Designs In this example, there are two factors (sleep time and study time) and each factor has two levels (sufficient versus insufficient). Each factor is denoted by a letter and each level of the IV is represented by a number. sufficient sleep insufficient sleep sufficient study insufficient study Factor A Factor B A1B1 A1B2 A2B1 A2B2
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Factorial Designs Factorial Designs sufficient sleep insufficient sleep sufficient study insufficient study Factor A Factor B sufficient study insufficient study sufficient sleep insufficient sleep Study Sleep 2 x 2 factorial design = 4 cells
Image of page 6
Factorial Designs Factorial Designs When you have two factors and two levels for each, you have a 2 x 2 factorial design. The number of digits indicates how many IVs there are in your study and the actual value of each digit indicates how many levels there are for each IV. 2 x 3 2 x 2 x 3 Factor A Factor B 2 levels 3 levels Factor A Factor B 2 levels 2 levels Factor C 3 levels
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Factorial Designs Factorial Designs recall happy recall sad learn happy learn sad Factor A Factor B A1B1 A1B2 A2B1 A2B2 What is the effect of mood on memory? Does it matter more at learning or at recall?
Image of page 8
Factorial Designs Factorial Designs recall happy recall sad learn happy learn sad Factor A Factor B learn happy learn sad recall happy recall sad Learn Recall 2 x 2 factorial design
Image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Factorial Designs Factorial Designs High trait Med. trait test anxiety no test anxiety Factor A Factor B A1B1 A1B2 A2B1 A2B2 What are the effects of anxiety on test performance?
Image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern