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Table 1 Head turn index and number of subjects that did not turn their head (no) and that turned their head to the right side (R) or to the left side (L) for conspecific and control playback stimuli (non-biological sound; heterospecific evolutionarily far related species; heterospecific evolutionarily closely related species).

From: Sex-specific asymmetries in communication sound perception are not related to hand preference in an early primate

    Males Females
  N No. R L Index R L Index
Conspecific communication sounds
Whistle 31 8 10 2 0.67* 5 6 -0.09
Tsak 33 5 11 2 0.69* 7 8 -0.07
Trill 28 0 10 6 0.25 4 8 -0.33
Non-biological sounds
Noise 37 11 7 6 0.08 5 8 -0.23
12 kHz 30 10 6 3 0.33 6 5 0.09
Heterospecific evolutionarily far related species
Bat 31 9 8 4 0.33 6 4 0.20
Heterospecific evolutionarily closely related species ( Microcebus lehilahytsara )
Whistle 28 6 7 4 0.27 6 5 0.09
Tsak 32 4 11 3 0.57 9 5 0.29
Trill 29 7 7 6 0.08 3 6 -0.33
Heterospecific evolutionarily closely related species ( Microcebus ravelobensis )
Whistle 33 7 6 8 -0.14 7 5 0.17
Tsak 26 4 6 7 -0.08 6 3 0.33
Trill 27 3 5 6 -0.09 8 5 0.23
  1. * p < 0.05