Generating Research Hypotheses

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Generating Research Hypotheses
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Sources of Generating Research Ideas

• ____________
• Opposites Attract
• Birds of one feather flock together
• ________
• Internally consistent
• Testable provides operational definitions

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Use Previous Research to

• Improve _____________
• Control for potential _________ variables that
  may have caused the change in participants
• Example Pennebaker (1979) and Gladue Delaney
  (1990)
• Dont the girls all get prettier at closing
  time (Mickey Gilleys country western song)

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Lyrics to Dont the girls all get prettier at
closing time

• The girls all get prettier at closing timeThey
  all begin to look like movie starsThe girls all
  get prettier at closing timeWhen the change
  starts taking placeIt puts a glow on every
  faceOf the falling angels of the back street
  bars(verse 1)If I could rate'em on a scale
  from 1 to 10I'm lookin' for a 9 but 8 would slip
  right inA few more drinks and I might slip to a
  5 or even a 4But when tomorrow morning comes,
  and I wake up with a number 1I sware I'll never
  do it anymore

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Use Previous Research to

• Improve ________ Validity
• Repeat the study to be sure psychological element
  being assessed is really being tested
• How?
• Use different ____________ definition

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Use Previous Research to

• Improve external validity
• Replicate the study with different participants
• Replicate in different setting

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Understand ________ relationship

• How ______ of one factor produces the behavior?
• Myers (2000) study on income and life
  satisfaction

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(No Transcript)
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Identify _________ variables

• Factor that intensifies, weakens, or _________
  the effect
• Example social inhibition and social
  facilitation effects

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Characteristics of Hypotheses

• Testable
• Make sure it can be _________
• Operational definition is important
• Be as specific as possible
• Experimental vs. Null Hypotheses

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• _____________ Hypothesis
• Proposed statement that describes or explains a
  relationship between or among variables
• Null Hypothesis
• Statement that there is ___ effect, no change, or
  no relationship between or among variables
  studied
• You can ______ prove this! Just because you
  didnt find the effect, doesnt mean it doesnt
  exist (Example lost credit card)

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2 Types of Experimental Hypotheses

• Non-Directional
• indicates that there is a _________ between
  conditions
• Directional
• specifies ________ the difference occurs

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Characteristics of Hypotheses

• Refutable
• Can be demonstrated to be ______
• ________
• Demonstrate its importance/value
• Practical
• Do you have the ______ to carry out the study?
• Ethical
• Is study in line with APA _________ ______?