Table 1 Example composition of a stimulus film.

From: Pet-directed speech improves horses’ attention toward humans

Section

1

2

3

4

Woman

A

B

C

D

Type of speech

ADS

PDS

ADS

PDS

  1. A film lasted two minutes and was divided in four sections. During each section a same sentence was repeated four times. The orders of the types of speech, along with which type of speech each woman was using for each horse, were counterbalanced.