week 7

Question 1

single factor design

Answer 1

• one independent variable

Question 2

independent groups design

Answer 2

• manipulated independent variable and simple random assignment us used to create equal groups

Question 3

matched group design

Answer 3

• manipulated IV
• matching procedure followed by random assignment is used

Question 4

Ex post facto design

Answer 4

• investigating a subject variable and the groups are composed of diff types of ppl
• ppl are placed into groups after existing subject characteristics
• similar in all other ways except one subject variable
• no random assignment

Question 5

repeated measure design

Answer 5

• IV is tested within subjects (repeated)

Question 6

single factor multilevel designs

Answer 6

• one IV, using three or more levels

Question 7

one disadvantage of single factor multilevel designs is that it enables researcher to discover _________ effects

Answer 7

nonlinear effects

Question 8

what graph is used for between subjects

Answer 8

bar graph

Question 9

what graph should be used for within subjects

Answer 9

line graph

Question 10

systemic variance and error variance

Answer 10

systemic: results from unidentifiable factor (confound or IV)
error: due to individual differences between subjects in the group and variance between other effects

Question 11

inferential stats equation

Answer 11

• variability between conditions/variability within each condition
• (systematic +error) / (error)

Question 12

Homogeneity of variance

Answer 12

• variability of each set of scores compared must be similar

Question 13

stat tests for single factor, two level designs

Answer 13

• independent samples t test (two independent groups)
• dependent samples/paired t test (groups have similarity)

Question 14

conducting multiple t test increases chance of _________

Answer 14

type 1 error, instead use anova

Question 15

f score/ratio

Answer 15

• like t test outcome
• seen in an ANOVA source table
• shows if the mean difference could be due to chance or factors (IV)

Question 16

types of control groups

Answer 16

• placebo (fake condition)
• wait list (get ppl w no treatment ethically)
• yoked (everything is done the same (time, activities) but they are not using the same testing methods, not actually doing the test similar to placebo)