Unit 0 - psychology

- Correlation:

  • CORRELATION DOES NOT EQUAL CAUSATION

  • Positive Correlation – variables increase & decrease together

  • Negative Correlation – as one variable increases the other decreases

  • The stronger the # the stronger the relationship REGARDLESS of the pos/neg sign. Cannot be < or > than 1.

  • Stronger relationships = tighter clusters on graph

- Experiments are only the type that establishes cause and effect

- Statistics:

  • Skews – created by outlers

  • Neg skew = mean is to the left (neg side), mode is to the right

  • Pos skew = mean is to the right

- ETHICAL GUIDELINES (IRB APPROVAL NEEDED FOR PPL)

  • Confidentiality: names kept secret

  • Informed Consent: must agree to be part of study

  • Informed assent – minors AND their parents must agree

  • Debriefing: must be told the true purpose of the study (done after for deception)

  • Deception must be warranted

  • No harm– mental/physical

- DO NOT MIX Random Sample and Random Assignment. Sample = Generalize. Assignment = Cause/Effect