Dataset description for: BEHECO-2016-0276 When the mean no longer matters: developmental diet affects behavioral variation but not population averages in the house cricket (Acheta domesticus) Raphael Royaute and Ned A. Dochtermann (Behavioral Ecology 2016) Corresponding author: Raphael Royaute (raphael.royaute@gmail.com) Dataset Description: Behavioural and body mass data for crickets reared under low and high quality diets. Abbreviations: _OC indicates variables associated with the obstacle course test, _AP indicates variables associated with the predator cue response test. _mean, _dev, _cen indictates variables that were either mean-centered, or expressed as standard deviation units Column description: General information columns: Id: Indicates the Id code for each individual. Mass: the individual's mass in mg. Date: Date at which the measurement was taken (m/d/y) Day: number of days after the start of the diet treatments Observer: the observer code for the person conducting the behavioral tests Rep: the number of repeated measures performed for a given test on a given individual (Rep = 2 and Activity_OC = 200 means that on the second time the obstacle course was repeated, this individuals activity was of 200 cm). Batch: the experimental batch each individual belonged to. Temp: the temperature of the exprimental room while performing tests in celsius. Injury: whether an individual had obvious leg damage (Y) or no damage (N). Treatment: whether individuals were randomly allocated to a low quality (LowQual) or high quality (HighQual) diet. Activity: the distance travelled in the experimental arena in cm. JDate: date column converted to Julian date format. Escaped: whether the cricket managed to escape the predator cue response arena (Y) or not (N). Obstacle course test details: Each cricket was introduced in a modified 60 cm × 60 cm × 15 cm high open-field arena. The individuals had to navigate around multiple obstacles to explore the entire arena. The cricket was introduced at the bottom left corner of the arena and was allowed to move freely into the arena for 220s. Predator cue response test details: Each cricket was introduced in a 15 cm circular arena with a filter paper at the bottom containing diluted excreta of Leopard geckos, which are common cricket predators.