Browsing by Subject "Response latency"

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    Changes in patterns of early mother-child interaction: a longitudinal study of the first 18 months of life
    (Elsevier, 2023-08-20) Perea Velasco, Laura Patricia; Martínez Fuentes, María Teresa; Pérez López, Julio; Psicología Evolutiva y de la Educación; Facultades de la UMU::Facultad de Psicología y Logopedia
    Objective The main objective of the present longitudinal study is to describe the progression of early adult-child interactions between the first and second years of life. Changes identified in interactions are described, focusing on both the qualitative aspects of maternal responses, as well as maternal response latency to the child's behavior using a microanalytical methodology that collected data on maternal and child behavior in real-time without losing sight of the temporal dimension. Participants This study examined 52 mother-child dyads from intact families that presented no psychological, social, or biological risk factors at 6, 12 and 18 months of age. Instrument CITMI-R (early mother-child interaction coding system, revised edition) was used to assess early mother-infant interactions during free play sessions between mother and child the. Results The results indicate that some components of maternal sensitivity improve as children progress towards the second year of life, detecting an increase in sensitive maternal behavior and a decrease in intrusive behavior in the evolutive observed period; moreover, regarding latency of maternal response, we observed that mothers of older children give more time for their children to explore, which stimulates autonomy. Finally, the implication of these results for intervention directed to optimizing early adult-child interactions are addressed.
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    Reading response latencies in Spanish: effects of lexicality and frequency
    (Asociación Española de Comprensión Lectora, 2018) Difalcis, Micaela; Ferreres, Aldo; Abusamra, Valeria
    The aim of this work was to design and apply a test of reading words and non-words (PaNoPa) to study the response latencies in Spanish-speaking subjects. A single previous study had reported such effects but the test used did not control lexical variables (number and frequency of orthographic neighbors) or sublexical variables (frequency of bigram and initial phonemes) that are important for the correct analysis of latencies. The study of effects of lexicality and frequency in control participants is relevant for the discussion on the universality of psycholinguistic reading models and also for the characterization of reading disorders due to brain lesions (acquired dyslexia) in Spanish-speaking subjects. With an exhaustively controlled test, reading latencies were obtained in a sample of Spanish-speaking readers and an ANOVA analysis was carried out by subject and by type of stimulus. The results showed significantly lower latencies for words with respect to non-words (lexicality effect) and for frequent words regarding infrequent words (frequency effect). A significant difference was also found between the latencies of the infrequent words and the non-words. These findings provide evidence in favor of the existence of a lexical reading route in a transparent language such as Spanish and provide a tool and data for the psycholinguistic study of the reading alterations of Spanish-speaking subjects with acquired dyslexia.