Week 1 - Analytic Choices

Question 1

“Are caffeine intake and reaction time related?”

Answer 1

Bivariate correlation

Question 2

“Does caffeine intake predict reaction time”

Answer 2

Bivariate regression

Question 3

“Do reaction time scores differ across groups with different levels of caffeine consumption (i.e., 0mg of caffeine vs. 50mg vs. 100mg)”

Answer 3

One way between groups ANOVA

Question 4

Do reaction time scores differ when we give the same group of participants different levels of caffeine (i.e., 0mg, 50mg, 100mg)”

Answer 4

One way within subjects ANOVA

Question 5

“Does the influence of caffeine consumption on reaction time differ depending on reinforcement type?”

Answer 5

Factorial ANOVA - two way ANOVA

Question 6

What constitutes a two-way between subjects ANOVA

Answer 6

• Different people across each level of both IV’s
• Different people in each cell type

Question 7

What constitutes a two-way mixed ANOVA

Answer 7

One group between and one within. Assigned to one level of an IV and complete all levels of the other IV

Question 8

What constitutes a two-way within subjects ANOVA

Answer 8

• Same people in all cells
• Every participant does every level of both IV’s

Question 9

“is there a difference in reaction time scores across levels of reinforcement” is looking at what effect?

Answer 9

Main effect

Question 10

If you seen large differences in caffeine intake on reaction time when given positive reinforcement, but not negative reinforcement, what effect would this be describing?

Answer 10

Interaction effect

Question 11

Interaction effect

Answer 11

Whether the effect of one IV (on DV) depends on the level of the other IV

Question 12

Main effect

Answer 12

Overall effect of one IV averaging over the levels of the other IV

Question 13

Review slide

Answer 13

Basic stat decision tree by Howell - user friendly and easy to follow.
Includes non-parametric equivalent to parametric tests as well

Question 14

Review slide

Answer 14

Corston & Coleman - similar to Howell’s, but relies on some different terms to categorise data e.g., ordinal, interval

Question 15

Review slide

Answer 15

Field - more advanced (includes more tests): illustrates that even though structured differently to other decision trees, asking different questions, it still leads you to the same answer

Question 16

Review slide

Answer 16

Tabachnick and Fidell - most comprehensive of all decision trees. Asks about structure (latent structure that might underlie a set of variables) and prediction of group membership (whether can predict a group someone might belong to from a set of variables)

Question 17

“Does caffeine intake and age predict reaction time”

Answer 17

Multiple regression

Question 18

“Do caffeine intake and age predict whether or not someone is an honours student?”

Answer 18

Logistic regression - used when outcome variable is discrete or categorical

Question 19

“Is life satisfaction related to the number of social events attended per month”

Answer 19

Bivariate correlation

Question 20

“Does early life adversity predict gut health later in life?”

Answer 20

Bivariate regression

Question 21

“Do body dysmorphia and vicarious trauma predict fear of childbirth?”

Answer 21

Multiple linear regression

Question 22

“Is there a difference in fluid intelligence scores for people with good sleep quality compared to people with poor sleep quality?”

Answer 22

Independent groups t-test

Question 23

“Is there a difference in empathic tendencies when the same group of participants are assessed in the morning compared to when they are assessed in the evening?”

Answer 23

Repeated measures t-test

Question 24

“Is there a difference in athletic ability in people from NSW, QLD, & VIC?”

Answer 24

One-way between groups ANOVA

Question 25

“Is there a difference in self-reported resilience before, during and following a physical activity intervention?”

Answer 25

One-way within subjects ANOVA

Question 26

“During public speaking, does the effect of audience size (small or large) on physiological arousal differ depending on whether the person is introverted or extraverted?”

Answer 26

Interaction effect of two-way between groups ANOVA

Question 27

“Do changes in mood state across a day (morning, afternoon, evening) differ according to the season (summer, autumn, spring)?”

Answer 27

Interaction effect of two-way within subjects ANOVA

Question 28

“Following a musical therapy intervention, is there a greater improvement in cognitive functioning for individuals who played an instrument in childhood compared to those who did not?”

Answer 28

Interaction effect of two-way mixed ANOVA

Question 29

“Does confidence in the reliability of a witness predict verdict in a criminal trial?”

Answer 29

Logistic regression

Question 30

“Does a tendency to make source memory errors predict belief in conspiracy theories once political ideology is accounted for?”

Answer 30

Hierarchical multiple regression