Louis A. Schmidt
McMaster University
ShynessDevelopmental psychologyPsychologyLow birth weightSocial psychology
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Publications 316
#1Jordana A. WaxmanH-Index: 5
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#1Karen J. Mathewson (McMaster University)H-Index: 13
#2Daphne Mauer (McMaster University)H-Index: 51
Last. Louis A. Schmidt (McMaster University)H-Index: 46
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#1Kristie L. Poole (McMaster University)H-Index: 6
#2Charles E. Cunningham (McMaster University)H-Index: 43
Last. Louis A. Schmidt (McMaster University)H-Index: 46
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Shyness can manifest as inhibition, fear, and avoidance in the context of social novelty and situations of perceived social evaluation. In the present study, 130 children (Mage = 7.6 years, SD = 1.8) participated in a videotaped self-presentation task across three separate visits spanning approximately 3 years in early and middle childhood. Children’s observed shyness was best characterized by two trajectories, including a high-stable class (19%) and a low-stable class (81%). Girls were more lik...
Abnormal colonic motility may be associated with dysfunction of the autonomic nervous system. Our aim was to evaluate if associations between colonic motor patterns and autonomic neural activity could be demonstrated by assessing changes in heart rate variability (HRV) in healthy volunteers. A total of 145 colonic motor patterns were assessed in 11 healthy volunteers by High-Resolution Colonic Manometry using an 84-channel water-perfused catheter. Motor patterns were evoked by balloon distention...
* Abbreviation: EP — : extremely premature In this issue of Pediatrics , O’Reilly et al1 report on neuropsychological outcomes at 19 years of age after extremely preterm (EP) birth using the 1995 EPICure birth cohort of infants born EP (<26 weeks’ gestation) in the United Kingdom and Ireland. Previously, the cohort had been found at 2.5, 6, and 11 years of age to score significantly lower on measures of general cognitive impairment compared with term controls. Now, at 19 years of age, the author...
#1Christina A. Brook (McMaster University)H-Index: 1
#2Louis A. Schmidt (McMaster University)H-Index: 46
Abstract Although sociability is a fundamental dimension of temperament and personality, few studies have examined it over the lifespan. In this study, sociability was measured across ages 3 to 86 years after assessing for measurement invariance through the multigroup confirmatory factor framework and the more recent alignment method to ensure meaningful differences were assessed between different age groups. Using a repeated cross-sectional design, separate adult (N = 1366, ages 17–86 years) an...
#1Rebecca J. Brooker (A&M: Texas A&M University)H-Index: 2
#2Elizabeth J. Kiel (Miami University)H-Index: 15
Last. Ryan J. Van Lieshout (St. Joseph's Healthcare Hamilton)
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