Browsing by Author "van IJzendoorn, Marinus H."
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- Celebrating more than 26,000 adult attachment interviews: Mapping the main adult attachment classifications on personal, social, and clinical statusPublication . Bakermans-Kranenburg, Marian; Dagan, Or; Cárcamo, Rodrigo A.; van IJzendoorn, Marinus H.Since the development of the Adult Attachment Interview (AAI) in 1985, more than 26,000 AAIs have been administered, coded, and reported, representing 170 (wo-)man-years of work. We used multinomial tests and analyses of correspondence to compare the AAI distributions in various cultural and age groups, in mothers, fathers, high-risk, and clinical samples with the combined samples of North American non-clinical, non-risk mothers (22% dismissing, 53% secure, 8% preoccupied, and 17% unresolved loss or other trauma). Males were more often classified as dismissing and less frequently classified as secure compared to females (except adoptive fathers), and females were more frequently classified as unresolved (but not more often preoccupied) compared to males. A combination of high scores on the unresolved and insecure-preoccupied dimensions was shared by borderline personality disorder, autism spectrum disorders, and gender dysphoria, while combined high scores on the unresolved and insecure-dismissing dimensions characterized anxiety problems, obsessive-compulsive and thought disorders.
- Effects of a soft baby carrier on fathers’ behavior and hormones: A randomized controlled trialPublication . Verhees, Martine W. F. T.; Lotz, Anna M.; de Moor, Marleen H. M.; van IJzendoorn, Marinus H.; Fidder, Annabeth A. E. J.; Buisman, Renate S. M.; Bakermans-Kranenburg, Marian J.Increased father–infant physical contact may promote early paternal caregiving. This randomized controlled trial, preregistered on https://osf.io/qwe3a , tested the effects of a soft baby carrier intervention on fathers’ parenting behavior and hormonal levels. Eighty first-time fathers of 2- to 4-month-old infants were randomly assigned to a baby carrier intervention group (n = 41 fathers) or a control group receiving an infant seat (n = 39 fathers). Fathers were instructed to use the baby carrier or seat for 3 weeks. Fathers’ sensitive parenting behavior, involvement, salivary oxytocin and cortisol basal levels and reactivity to interacting with the infant were assessed at pre-test (on average 2 weeks before the intervention) and at post-test (on average 1 week after the intervention period ended). The results showed that the intervention did not enhance fathers’ sensitive parenting or involvement. Involvement operationalized as hours spent with the infant decreased over time for fathers in the carrier condition compared to fathers in the control condition. The baby carrier intervention had no effect on fathers’ basal oxytocin or cortisol levels, nor did it affect fathers’ oxytocin or cortisol reactivity to interacting with their infant. Our findings indicate that 3 weeks of using a baby carrier does not have immediate beneficial effects on fathers’ parenting behavior or hormonal functioning as assessed here. Future research may examine whether infant carrying has beneficial effects on the longer term or in different groups of fathers, and how fathers’ infant carrying affects their infants.
- Secure base script knowledge and video-feedback intervention to promote positive parenting-sensitive disciplinePublication . Witte, Annemieke M.; Runze, Jana; van IJzendoorn, Marinus H.; Bakermans-Kranenburg, Marian J.This preregistered randomized controlled study investigated the effects of Video-Feedback Intervention to promote Positive Parenting and Sensitive Discipline (VIPP-SD) on parents’ secure base script knowledge (SBSK). Furthermore, we examined whether effects of VIPP-SD on sensitive caregiving and sensitive discipline behavior and parents’ attitudes toward these behaviors were moderated by SBSK at baseline. Families (n = 445) with preand school-aged children (n = 890) were randomized to receive VIPP-SD or telephone calls. Results showed no effects of VIPP-SD on SBSK. Furthermore, there was no moderation of effects on sensitive caregiving or sensitive discipline behavior by SBSK. VIPP-SD promoted positive attitudes toward sensitive caregiving and sensitive discipline behavior. The latter effect was moderated by SBSK: parents with lower SBSK showed the strongest improvements in positive attitudes toward sensitive discipline behavior. This effect was driven by a subgroup of younger children. These findings highlight the potential importance of tailoring interventions to meet the specific needs of parents with varying levels of SBSK