AD ALTA
JOURNAL OF INTERDISCIPLINARY RESEARCH
intelligent face (regardless the sex of the face) is considered to
be the prettiest, and participants, in general, prefer extravert
female and male faces. Results are in favour of the evolutionary
assumptions.
Table 2: One sample Chi-Square for the attractiveness of the
images of faces according the level of intelligence
Observed
N
Expected
N
Residual
Chi
Square
Sig
Low intelligence
male face
preference
151
697.3
-546.3
677.066
0.000
Middle
intelligence
male face
preference
860
697.3
162.7
Highest
intelligence male
face preference
1081
697.3
383.7
Low intelligence
female face
preference
199
697.0
-498.0
827.555
0.000
Middle
intelligence
female face
preference
626
697.0
-71.0
Highest
intelligence
female face
preference
1266
697.0
569.0
Next, we analyzed the possible differences of verbal intelligence
of the observer according to their preference of extraversion in
faces using the t-test, the preference of higher intelligence, and
the ability to identify the level of intelligence from faces using
ANOVA.
Participants with the extravert male face preference manifest
higher scores of verbal intelligence (t=-2.628; Sig=0.009) than
the participants with introvert male face preference. A very
similar result was found in the participants with the preference of
an extravert female face, they are significantly more verbally
intelligent than the opposite group (t=-3.590; Sig=0.000).
Table 3: Observed differences in verbal intelligence according to
extrovert/introvert face preference
N
M
SD
t
Sig
Introvert male face
preference
871
15.20
3.373
-2.628
0.009
Extravert male face
preference
1203
15.57
2.913
Introvert female face
preference
507
14.99
3.385
-3.590
0.000
Extravert female face
preference
1566
15.56
2.995
Through the analysis of the differences of verbal intelligence of
the observer according to their preference of higher intelligence,
we have found out that the group of participants who prefer the
highest intelligence in male faces are themselves the most
verbally intelligent (M=15.66) with declining level of
intelligence in compliance with the intelligence preference in
male faces [middle intelligence male face preference: M=15.37,
low intelligence male face preference: M=13.92]. These
differences are significant (tab. 4).
Very similar are the results of the verbal intelligence comparison
according to the attractiveness evaluation of female faces
(F=7.938; Sig=0.000). The most verbally intelligent participants
are those who prefer the highest intelligence female face
(M=15.61).
Table 4: Observed differences in verbal intelligence of the
observer according to intelligence male and female face
preference
N
M
SD
F
Sig
Low intelligence male face
preference
151
13.92
3.994
20.959
0.000
Middle intelligence
male face preference
859
15.37
3.262
Highest intelligence male face
preference
1080
15.66
2.813
Low intelligence female face
preference
198
14.75
4.305
7.938
0.000
Middle intelligence
female face preference
625
15.24
3.175
Highest intelligence female face
preference
1266
15.61
2.858
As we were interested in the role of verbal intelligence in the
process of evaluation of intelligence from human faces, we
analyzed the possible differences of verbal intelligence of the
observer according to their ability to identify the level of
intelligence from faces using ANOVA. Different results are
provided by the comparison of the level of intelligence
assessment in male faces and the level of intelligence assessment
in female faces (tab. 5). The verbal intelligence of participants
correctly identifying the highest intelligence of the male face
doesn’t significantly differ from the other groups (F=0.042;
Sig=0.959). On the other hand, the difference in verbal
intelligence of the observers is significant in the case of the
female face assessment. The group of participants who correctly
identified the highest intelligence in the female composite face is
the most verbally intelligent group (F=8.670; Sig=0.000).
Table 5: Observed differences in verbal intelligence of the
observer according to intelligence male and female face
assessment
N
M
SD
F
Sig
Low intelligence male face
248
15.41
3.151
0.042
0.959
Middle intelligence
male face
816
15.47
3.183
Highest intelligence male
face
982
15.43
3.057
Low intelligence female
face
320
14.89
3.823
8.670
0.000
Middle intelligence
female face
808
15.29
3.163
Highest intelligence female
face
963
15.68
3.130
Lastly, we analyzed differences between participants in
extraversion according to their preference of the intelligence of
the observed face. As can be seen in table 6, participants with the
preference of the highest intelligence in male faces are typical by
highest extraversion, the difference is statistically significant
(F=6.670; Sig=0.001). The same tendency is apparent when the
participants are asked to choose the more attractive female face,
those who have the preference for the highest intelligence female
face are the most extravert (F=5.360; Sig=0.005).
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