{'fraction_non_alphanumeric': 0.055341055341055344, 'fraction_numerical': 0.03088803088803089, 'mean_word_length': 5.122047244094488, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Maternal perception of infant's intersubjectivity: a questionnaire.

INTRODUCTION
Intersubjectivity is a fundamental dimension of the mother-infant relationship.


OBJECTIVE
Design of a questionnaire to assess maternal perception of the infant's intersubjectivity.


DESIGN
After running a focus group with mothers of infants within their first year of life, items related to maternal perception of the infant's intersubjectivity were generated. These items were applied to a sample of 125 mothers and the results were submitted to principal components analysis.


RESULTS
Principal components analysis (forced extraction to 3 factors, KMO = .752, Bartlett = 976.202, p = .000; explained variance = 42.12%) identified 22 items grouped in three factors: a) F1, 'Interactive Competence' (α = .817); b) F2, 'Emotional States' (α = .749), and c) F3, 'Initiative' (α = .647). Positive and significant correlations were observed among all MPIIQ factors (p ≤ .01). Maternal perception of infant's intersubjectivity varied according to the number of gestational weeks at birth (T = -1.15, p ≤ .05) and according to the infant´s age (F = 7.834, p ≤ .001). Mothers of preterm infants reported lower perception of infant's intersubjectivity whereas mothers of older infants reported higher perception of infant's intersubjectivity.


CONCLUSION
The Maternal Perception of Infant's Intersubjectivity Questionnaire (MPIIQ) seems to be a sensitive instrument, able to discriminate different levels of maternal perception about the infant's intersubjective competences.