Table 2.

List of behavioral variables measured in the mHB and used in this study

MOTIVATIONAL SYSTEM

Behavioral dimension

Variable

ANXIETY-RELATED BEHAVIOR

Avoidance [z] a

Total number of board entries (freq)[−z]

Latency until first the board entry (s) [z]

Percentage of time on the board (%) [−z]

Risk assessment [z]

Total number of risk assessments (freq) [z]

Latency until the first risk assessment (s) [−z]

Arousal [z]

Total number of self-groomings (freq) [z]

Latency until first self-grooming (s) [−z]

Percentage of time self-grooming (%) [z]

Total number of defecations (freq) [z]

Latency until first bolus (s) [−z]

Total number of urinations (freq) [z]

Latency until first urination (s) [−z]

LOCOMOTION

Total number of line crossings (freq) [z]

Latency until first line crossing (s) [−z]

^a The directionality of the z-scores was adjusted so that increased score values reflected increased values for that behavioral dimension or motivational system: [z] = regular z-score, [−z] = adjusted z-score