Results

Repeated Measures ANOVA

To conduct the analysis:

  1. Name the first factor in the Repeated Measures Factors box (I named it Condition)
  2. Name each level of the factor (in this case there are three)
  3. Connect the relevant variable to the corresponding cell in the Repeated Measures Cells box
Within Subjects Effects
Cases Sphericity Correction Sum of Squares df Mean Square F p
Condition Greenhouse-Geisser 795.355 1.664 477.930 58.684 < .001
Residuals Greenhouse-Geisser 1707.705 209.685 8.144  
Note.  Type III Sum of Squares
ᵃ Mauchly's test of sphericity indicates that the assumption of sphericity is violated (p < .05).
Between Subjects Effects
Cases Sum of Squares df Mean Square F p
Residuals 4303.178 126 34.152  
Note.  Type III Sum of Squares

Descriptives

Descriptives plots

Based on the descriptives plot below, it looks like children took longer on average to approach the box ‘containing’ an animal that they they had heard threat information about.

Raincloud plots

Time to approach (sec)

Assumption Checks

Based on the Q-Q Plot below, we can conclude that we have a normality problem. This is, in part, because if a child hadn’t approached the box within 15 seconds we (for ethical reasons) assumed that they did not want to complete the task and so we assigned a score of 15 and asked them to approach the next box.


Back when I conducted these research I log-transformed the scores to reduce the skew. This brings us onto Task 7!

Q-Q Plot