Table 1.

IBQ-R Scales

IBQ-R Scale	Scale Description
Approach	Rapid approach, excitement, and positive anticipation of pleasurable activities
Vocal Reactivity	Amount of vocalization exhibited in daily activities
High Intensity Pleasure	Amount of pleasure or enjoyment related to high stimulus intensity, rate, complexity, novelty, and incongruity
Smiling and Laughter	Smiling or laughter in general caregiving and play situations
Activity Level	Movement of arms and legs, squirming, and locomotor activity
Perceptual Sensitivity	Amount of detection of slight, low intensity stimuli from external environment
Sadness	General low mood; lowered mood and activity related to personal suffering, physical state, object loss, or inability to perform a desired action
Distress to Limitations	Fussing, crying, or showing distress when in a confining place or position, involved in caregiving activities, or unable to perform a desired action
Fear	Startle or distress to sudden changes in stimulation or novel physical objects or social stimuli; inhibited approach to novelty
Falling Reactivity/Rate of Recovery from Distress	Rate of recovery from peak distress, excitement, or general arousal; ease of falling asleep
Low Intensity Pleasure	Amount of pleasure or enjoyment related to low stimulus intensity, rate, complexity, novelty, and incongruity
Cuddliness	Expression of enjoyment and molding of body to being held by caregiver
Duration of Orienting	Attention to and/or interaction with a single object for extended periods of time
Soothability	Reduction of fussing, crying, or distress when caregiver uses soothing techniques