Table 4.

Models fitted in lme4 to study variation in the distance skinks fled

Model	Fixed effects	Random effects	AIC
M0DF—basic regression	Observer, site, logSD	N/A	N/A
M1DF—random intercept trial	Observer, site, logSD, trial	Intercept: skink	38.75
M2DF—random intercept with site–trial interaction	Observer, site, logSD, trial, site*trial	Intercept: skink	42.26
M3DF—random intercept/random slope with site–trial interactions	Observer, site, logSD, trial	Intercept: skinkSlope: trial	41.94
M4DF—random intercept/random slope with site–trial interactions	Observer, site, logSD, trial, site*trial	Intercept: skinkSlope: trial	45.41

Dependent variable is logDF for all models. Bold text indicates model with lowest AIC.

^*Indicates an effect interaction.