Research Methods/Designs/Problems Flashcards

1
Q

Research Design

A

-structure of how the study is conducted

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2
Q

Research Tools

A

-instruments, technology used to collect data

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3
Q

Research Analysis

A

-statistic technology for extracting structure from data

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4
Q

Types of Research Design

A
  1. Experimental Studies
  2. Correlation Studies
  3. Observational Studies
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5
Q

Experimental Studies

A
  • manipulate the independent variable (one you can’t control)
  • random assignment
  • control group
  • goal: assert causality
  • ex. facial feedback
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6
Q

Correlation Studies

A
  • measure 2 or more dependent variables
  • subject variables
  • statistical control
  • goal: asses relationships
  • ex. TV and mortality
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7
Q

Observational Studies

A
  • measure 1 or more dependent variables
  • exploratory experiment
  • no controls
  • goal: identify phenomena
  • ex. identify sexual orientation
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8
Q

Experimental Issues

A
  1. External Validity
  2. Internal Validity
  3. Sampling
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9
Q

External Validity

A

-generalizability

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10
Q

Internal Validity

A
  • cofounds: unintended difference
  • does the experiment apple to the outside world?
  • unintended independent variable
  • experimenter bias
  • single-blind studies: participant bias; placebo effect
  • double blind studies: no one knows whats happening
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11
Q

Sampling

A
  • who should be in your study?
  • members of group you are targeting
  • Population: group under study
  • Sample: individual who actually participate in your study
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12
Q

Random Sampling

A

-everyone in the population has equal chance of being in the study as a sample

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13
Q

Random Assignment

A

-taking members in the sample and assigning them to different conditions in the study

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14
Q

Stratification

A
  • make sure they have people on either extremes

- ex. really rich vs. really poor

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15
Q

Research Tools: Low Technology

A

-surveys, observation, text analysis

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16
Q

Research Tools: High Technology

A
  • fMRI: measure oxygen levels in the brain
  • NIRS: obtain oxygen and energy levels in the brain
  • motion capture or eye tracking
17
Q

Near IntraRed Spectroscopy (NIRS)

A
  • use a high intensity light source to look through the skill to the brain with 650 - 1100 nm
  • human tissue is translucent
  • color of the tissue causes significant light absorption
  • color of hemoglobin directly relates to the amount of Oxygen
  • incident: light in
  • detection: light out
18
Q

Research Analysis: Descriptive Statistics

A
  • measures of central tendency: means, medium, mode

- measures of dispersion: range, variance, standard deviance

19
Q

Research Analysis: Inferential Statistics

A
  • infer whether two sets of measurements are different

- beyond what might be expected by chance