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Developmental Psychobiology

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https://www.readbyqxmd.com/read/28295263/preschoolers-genetic-physiological-and-behavioral-sensitivity-factors-moderate-links-between-parenting-stress-and-child-internalizing-externalizing-and-sleep-problems
#1
Molly Davis, Kristel Thomassin, Joanie Bilms, Cynthia Suveg, Anne Shaffer, Steven R H Beach
This study examined three potential moderators of the relations between maternal parenting stress and preschoolers' adjustment problems: a genetic polymorphism-the short allele of the serotonin transporter (5-HTTLPR, ss/sl allele) gene, a physiological indicator-children's baseline respiratory sinus arrhythmia (RSA), and a behavioral indicator-mothers' reports of children's negative emotionality. A total of 108 mothers (Mage  = 30.68 years, SDage  = 6.06) reported on their parenting stress as well as their preschoolers' (Mage  = 3...
March 14, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28295244/the-effects-of-stimulus-symmetry-on-hierarchical-processing-in-infancy
#2
Maggie W Guy, Greg D Reynolds, Sara M Mosteller, Kate C Dixon
The current study investigated the effects of stimulus symmetry on the processing of global and local stimulus properties by 6-month-old short- and long-looking infants through the use of event-related potentials (ERPs). Previous research has shown that individual differences in infant visual attention are related to hierarchical stimulus processing, such that short lookers show a global processing bias, while long lookers demonstrate a local processing bias (Guy, Reynolds, & Zhang, ). Additional research has shown that in comparison with asymmetry, symmetry is associated with more efficient stimulus processing and more accurate memory for stimulus configuration (Attneave, ; Perkins, )...
March 13, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28295227/mild-perinatal-adversities-moderate-the-association-between-maternal-harsh-parenting-and-hair-cortisol-evidence-for-differential-susceptibility
#3
Dafna A Windhorst, Ralph C A Rippe, Viara R Mileva-Seitz, Frank C Verhulst, Vincent W V Jaddoe, Gerard Noppe, Elisabeth F C van Rossum, Erica L T van den Akker, Henning Tiemeier, Marinus H van IJzendoorn, Marian J Bakermans-Kranenburg
It has been shown that following exposure to mild perinatal adversity, children have greater susceptibility to both the negative and positive aspects of their subsequent environment. In a large population-based cohort study (N = 1,776), we investigated whether mild perinatal adversity moderated the association between maternal harsh parenting and children's hair cortisol levels, a biomarker of chronic stress. Mild perinatal adversity was defined as late preterm birth (gestational age at birth of 34-37 weeks, 6 days) or small for gestational age (birth weight between the 2...
March 13, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28294331/context-dependent-extinction-of-an-appetitive-operant-conditioned-response-in-infant-rats
#4
Estefanía Orellana Barrera, Carlos Arias, Felisa González, Paula Abate
The present study evaluated context-dependent learning under an operant conditioning procedure in infant rats. Preweanling rats were trained in context A during postnatal days (PDs) 16 and 17 to learn an appetitive operant conditioning task, employing milk chocolate as appetitive reinforcer. On PD18 the operant response was extinguished in context A, or in an alternative context B. The change from context A to B between acquisition and extinction did not affect the number of responses during extinction, but slightly modified the shape of the extinction curve...
March 13, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28261792/parasympathetic-reactivity-and-disruptive-behavior-problems-in-young-children-during-interactions-with-their-mothers-and-other-adults-a-preliminary-investigation
#5
Christine E Cooper-Vince, Mariah DeSerisy, Danielle Cornacchio, Amanda Sanchez, Katie A McLaughlin, Jonathan S Comer
Parasympathetic nervous system influences on cardiac functions-commonly indexed via respiratory sinus arrhythmia (RSA)-are central to self-regulation. RSA suppression during challenging emotional and cognitive tasks is often associated with better emotional and behavioral functioning in preschoolers. However, the links between RSA suppression and child behavior across various challenging interpersonal contexts remains unclear. The present study experimentally evaluated the relationship between child RSA reactivity to adult (mother vs...
March 6, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28247564/fkbp5-genotype-and-early-life-stress-exposure-predict-neurobehavioral-outcomes-for-preterm-infants
#6
Amy L D'Agata, Stephen Walsh, Dorothy Vittner, Xiaomei Cong, Jacqueline M McGrath, Erin E Young
PROBLEM: This study evaluated the relationship between stressful early life neonatal intensive care unit (NICU) experiences, genetic variation of a stress response-associated gene (FKBP5), and neurobehavioral outcomes. METHOD: The impact of genetic variation and stress experience on neurobehavioral outcomes was examined for 41 preterm infants. Statistical analyses explored the main effects of FKBP5 genotype and NICU stress experience, as well as their interaction on infant neurobehavioral development prior to discharge...
March 1, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28247407/context-dependent-individual-differences-in-playfulness-in-male-rats
#7
Jessica F Lampe, Oliver Burman, Hanno Würbel, Luca Melotti
Play has been proposed as an indicator of positive emotions and welfare in higher vertebrates. This study investigated playfulness in male rats by exploring its consistency across motivational states (with/without prior short social isolation) and two age points at early and late adolescence. Twenty-four male Lister Hooded rats housed in cages of four underwent two play tests: conspecific Play-in-Pairs and Tickling by the experimenter, which were compared with play in the home cage and basal anxiety levels...
March 1, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28220490/biological-embedding-of-perinatal-social-relationships-in-infant-stress-reactivity
#8
Jenna C Thomas, Nicole Letourneau, Crystal I Bryce, Tavis S Campbell, Gerald F Giesbrecht
Whereas significant advances have been made in understanding how exposure to early adversity "gets under the skin" of children to result in long term changes in developmental outcomes, the processes by which positive social relationships become biologically embedded remain poorly understood. The aim of this study was to understand the pathways by which maternal and infant social environments become biologically embedded in infant cortisol reactivity. Two hundred seventy-two pregnant women and their infants were prospectively assessed during pregnancy and at 6 months postpartum...
February 21, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28220475/dyadic-flexibility-mediates-the-relation-between-parent-conflict-and-infants-vagal-reactivity-during-the-face-to-face-still-face
#9
Alex Busuito, Ginger A Moore
Parent conflict is related to attenuated infant vagal reactivity, suggesting less effective regulation. Because infants' self-regulation develops in the context of coregulation, the current study examined a novel measure, flexibility, purported to reflect dyadic reorganization in response to contextual demands. Flexibility was expected to mediate the relation between greater conflict and lesser vagal reactivity during the reunion episode of the Face-to-Face Still-Face (FFSF). Six-month-old infants' and their mothers' (N = 53) affective behaviors were observed during the FFSF and heart rate data were collected for infants...
February 21, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28181225/electrophysiological-evidence-of-altered-visual-processing-in-adults-who-experienced-visual-deprivation-during-infancy
#10
Sidney J Segalowitz, Avital Sternin, Terri L Lewis, Jane Dywan, Daphne Maurer
We examined the role of early visual input in visual system development by testing adults who had been born with dense bilateral cataracts that blocked all patterned visual input during infancy until the cataractous lenses were removed surgically and the eyes fitted with compensatory contact lenses. Patients viewed checkerboards and textures to explore early processing regions (V1, V2), Glass patterns to examine global form processing (V4), and moving stimuli to explore global motion processing (V5). Patients' ERPs differed from those of controls in that (1) the V1 component was much smaller for all but the simplest stimuli and (2) extrastriate components did not differentiate amongst texture stimuli, Glass patterns, or motion stimuli...
February 9, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28138966/chronic-social-instability-in-adult-female-rats-alters-social-behavior-maternal-aggression-and-offspring-development
#11
Florent Pittet, Jessica A Babb, Lindsay Carini, Benjamin C Nephew
We investigated the consequences of chronic social instability (CSI) during adulthood on social and maternal behavior in females and social behavior of their offspring in a rat model. CSI consisted of changing the social partners of adult females every 2-3 days for 28 days, 2 weeks prior to mating. Females exposed to CSI behaved less aggressively and more pro-socially towards unfamiliar female intruders. Maternal care was not affected by CSI in a standard testing environment, but maternal behavior of CSI females was less disrupted by a male intruder...
January 31, 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28323349/maternal-depression-during-pregnancy-is-associated-with-increased-birth-weight-in-term-infants
#12
Lisa Ecklund-Flores, Michael M Myers, Catherine Monk, Albany Perez, Hein J Odendaal, William P Fifer
Previous research of maternal depression during pregnancy suggests an association with low birth weight in newborns. Review of these studies reveals predominant comorbidity with premature birth. This current study examines antenatal depression and birth weight in term, medically low-risk pregnancies. Maternal physiological and demographic measures were collected as well. In total, 227 pregnant women were recruited to participate in four experimental protocols at Columbia University Medical Center. Results indicate that depressed pregnant women who carry to term had significantly higher heart rates, lower heart rate variability, and gave birth to heavier babies than those of pregnant women who were not depressed...
April 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28323348/differences-in-flexor-and-extensor-activity-during-locomotor-related-leg-movements-in-chick-embryos
#13
Soo Yeon Sun, Nina S Bradley
Prior to hatching, chick embryos spontaneously produce repetitive limb movements (RLMs), a developmental precursor to walking. During RLMs, flexor and extensor muscles are alternately active as during stance and swing phases of gait. However, previous studies of RLMs observed that flexor muscles were rhythmically active for many cycles, whereas extensors often failed to be recruited. Thus, we asked if flexor muscles are preferentially recruited during RLMs in chick embryos 1 day before hatching and onset of walking...
April 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28323347/highly-stable-individual-differences-in-the-emission-of-separation-calls-during-early-development-in-the-domestic-cat
#14
Robyn Hudson, Jimena Chacha, Oxána Bánszegi, Péter Szenczi, Heiko G Rödel
Study of the development of individuality is often hampered by rapidly changing behavioral repertoires and the need for minimally intrusive tests. We individually tested 33 kittens from eight litters of the domestic cat in an arena for 3 min once a week for the first 3 postnatal weeks, recording the number of separation calls and the duration of locomotor activity. Kittens showed consistent and stable individual differences on both measures across and within trials. Stable individual differences in the emission of separation calls across trials emerged already within the first 10 s of testing, and in locomotor activity within the first 30 s...
April 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28323346/-giving-and-responding-differences-in-gestural-communication-between-nonhuman-great-ape-mothers-and-infants
#15
Christel Schneider, Katja Liebal, Josep Call
In the first comparative analysis of its kind, we investigated gesture behavior and response patterns in 25 captive ape mother-infant dyads (six bonobos, eight chimpanzees, three gorillas, and eight orangutans). We examined (i) how frequently mothers and infants gestured to each other and to other group members; and (ii) to what extent infants and mothers responded to the gestural attempts of others. Our findings confirmed the hypothesis that bonobo mothers were more proactive in their gesturing to their infants than the other species...
April 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28261795/birth-order-and-recalled-childhood-gender-nonconformity-in-samoan-men-and-fa-afafine
#16
Scott W Semenyna, Doug P VanderLaan, Paul L Vasey
Having a greater than average number of older biological brothers is a robust correlate of male androphilia (i.e., sexual attraction and arousal to adult males). Previous investigations have sought to understand whether this fraternal birth order (FBO) effect is also systematically related to recalled indicators of childhood gender nonconformity (CGN). However, these investigations have relied on data from low-fertility Western populations in which expressions of femininity in male children are routinely stigmatized and consequently, suppressed...
April 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28261786/lipids-in-maternal-diet-influence-yolk-hormone-levels-and-post-hatch-neophobia-in-the-domestic-chick
#17
Elske N de Haas, Ludovic Calandreau, Elisabeth Baéza, Pascal Chartrin, Rupert Palme, Anne-Sophie Darmaillacq, Ludovic Dickel, Sophie Lumineau, Cécilia Houdelier, Isabelle Denis, Cécile Arnould, Maryse Meurisse, Aline Bertin
We assessed whether the ratio of dietary n-6/n-3 polyunsaturated fatty acids (PUFA) during egg formation engenders transgenerational maternal effects in domestic chicks. We analyzed yolk lipid and hormone concentrations, and HPA-axis activity in hens fed a control diet (high n-6/n-3 ratio) or a diet enriched in n-3 PUFAs (low n-6/n-3 ratio) for 6 consecutive weeks. Their chicks were tested for neophobia during the first week of life. We found higher corticosterone metabolites in droppings of hens fed the diet enriched in n-3 and significantly higher concentrations of yolk progesterone, androstenedione, and estradiol in their eggs compared to controls...
April 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28181216/the-development-of-repetitive-motor-behaviors-in-deer-mice-effects-of-environmental-enrichment-repeated-testing-and-differential-mediation-by-indirect-basal-ganglia-pathway-activation
#18
Allison R Bechard, Nikolay Bliznyuk, Mark H Lewis
Little is known about the mechanisms mediating the development of repetitive behaviors in human or animals. Deer mice reared with environmental enrichment (EE) exhibit fewer repetitive behaviors and greater indirect basal ganglia pathway activation as adults than those reared in standard cages. The developmental progression of these behavioral and neural circuitry changes has not been characterized. We assessed the development of repetitive behavior in deer mice using both a longitudinal and cohort design. Repeated testing negated the expected effect of EE, but cohort analyses showed that progression of repetitive behavior was arrested after 1 week of EE and differed significantly from controls after 3 weeks...
April 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/27774583/cortisol-stress-responses-and-children-s-behavioral-functioning-at-school
#19
Sterre S H Simons, Antonius H N Cillessen, Carolina de Weerth
The present study investigated whether cortisol stress responses of 6-year-olds were associated with their behavioral functioning at school. Additionally, the moderating role of stress in the family environment was examined. To this end, 149 healthy children (Mage  = 6.09 years; 70 girls) participated in an age-appropriate innovative social evaluative stress test. Saliva cortisol samples were collected six times during the stress test to calculate two indices of the cortisol stress response: cortisol stress reactivity and total stress cortisol...
March 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/27861774/tony-decasper-the-man-who-changed-contemporary-views-on-human-fetal-cognitive-abilities
#20
Marie-Claire Busnel, William Fifer, Carolyn Granier-Deferre, Roger Lecuyer, George Michel, Christine Moon, Robin Panneton, Benoist Schaal, Melanie Spence
No abstract text is available yet for this article.
January 2017: Developmental Psychobiology
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