Forest before trees: Letter stimulus and sex modulate global precedence in visual perception
EntityUAM. Departamento de Psicología Biológica y de la Salud
PublisherFrontiers Media SA
10.3389/fpsyg.2021.546483Frontiers In Psychology 12 (2021): 546483
Funded byThis work was supported by Grant PGC2018-094937-B-100 from the Ministerio de Ciencia, Innovación y Universidades de España and research contracts supported by Comunidad de Madrid and co-financed by the European Social Fund (PEJD-2017- PRE/SOC-4240, PEJD-2018-PRE/SOC-9185, and PEJD-2018- PRE/SOC-8992).
ProjectGobierno de España. PGC2018-094937-B-100
Subjectsglobal precedence; global/local processing; hierarchical figures; menstrual cycle; Navon task; sex differences; visual attention; visual perception; Psicología
Rights© 2021 The Authors
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.
The global precedence effect (GPE), originally referring to processing hierarchical visual stimuli composed of letters, is characterised by both global advantage and global interference. We present herein a study of how this effect is modulated by the variables letter and sex. The Navon task, using the letters “H” and “S,” was administered to 78 males and 168 females (69 follicular women, 52 luteal women, and 47 hormonal contraceptive users). No interaction occurred between the letter and sex variables, but significant main effects arose from each of these. Reaction times (RTs) revealed that the letter “H” was identified more rapidly in the congruent condition both in the global and the local task, and the letter “S” in the incongruent condition for the local task. Also, although RTs showed a GPE in both males and females, males displayed shorter reaction times in both global and local tasks. Furthermore, luteal women showed higher d’ index (discrimination sensitivity) in the congruent condition for the local task than both follicular women and hormonal contraceptive users, as well as longer exploration time of the irrelevant level during the global task than males. We conclude that, according to the linear periodicity law, the GPE is enhanced for compound letters with straight vs. curved strokes, whereas it is stronger in males than in females. Relevantly, luteal phase of the menstrual cycle seems to tilt women to rely on finer grained information, thus exhibiting an analytical processing style in global/local visual processing
Google Scholar:Álvarez-San Millán, Andrea - Iglesias Dorado, Jaime - Gutkin de Freitas, Anahi - Olivares, Ela I.
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