# Social escape

Definition

A discrete (state event) variable that is scored when the focal subject walks away from a conspecific (named Receiver). The distance between the center points of the two subjects is within two times the average body length of the receiver.

Calculation

1.EthoVision XT finds all the events of type Get Away in the Live Mouse Tracker database.

2.EthoVision XT calculates the average body length of the subject which the focal subject is moving away from. The body length is measured as the distance between the nose-point and the tail-base point, and averaged throughout the entire track.

3.If the distance between the center point of the focal subject is within two times the average body length of the other subject, Social escape is scored for that sample.

How to specify Social escape

1.Open an Analysis profile and in the Dependent Variables panel, under Live Mouse Tracker, click the Add button next to Social escape.

2.Click the Receivers tab.

Under Select, choose the subjects that the focal subject escaped from. If you select two or more subjects, select one of the available options from the list:

▪All selected subjects: Social escape is scored when the focal subject escaped from all the subjects selected above simultaneously. For example, when the focal subject left a group of three cage mates.

▪Any selected subject: Social escape is scored when the focal subject escaped from any of the subjects selected above.

▪Each subject: Social escape is scored when the focal subject escaped from one of the subjects selected above. The results are displayed for each Receiver.

3.Complete the procedure to add the variable to the Analysis profile. See Calculate statistics: procedure

Notes

In the Trial Statistics results table, with the default layout, the results of Social escape are shown per subject (on the rows). The columns vary depending on what you chose in the Receivers tab (see above).

▪If you chose Each subject, the columns contain the statistics of Social escape from specific subjects (for example, Social escape A to D).

▪If you chose All selected subjects or Any selected subject, a column All of A, B, C, D or Any of A, B, C, D contains cumulative statistics of Social escape when the subject escaped from all the cage mates simultaneously or from any of them, respectively, depending on which option you chose.

See also

▪Social approach

▪Social > Relative movement