Applicazione della State Space Grid alla procedura Still-Face a 4 mesi: reattività vagale infantile e dinamiche interattive diadiche

Translated title of the contribution: [Autom. eng. transl.] Application of the State Space Grid to the 4-month Still-Face procedure: infantile vagal reactivity and interactive dyadic dynamics

Rosario Montirosso, Livio Provenzi, Renato Borgatti

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

[Autom. eng. transl.] INTRODUCTION The dyadic mother-child functioning can be described as a process of mutual regulation characterized by states of coordination and non-coordination (Tronick 2007). Although several indices have been proposed to describe dyadic functioning (for example, the matching index; Tronick and Cohn 1989), it has been suggested that these measures do not adequately capture the micro-temporal and dynamic nature of the interaction (Sravish et al 2013). To overcome these limitations, the State Space Grid (SSG, Hollenstein et al 2012) has been proposed, a graphic-quantitative approach that sets the behavior of the partners along two orthogonal axes, from whose intersection a grid that defines the dyadic states emerges: the operation dyadic is represented as a trajectory of 'visits' to the different states of the grid (Granic and Lamey 2002). Numerous studies have investigated dyadic functioning through the Still-Face paradigm (SF; Tronick et al 1978), an observational procedure that allows to analyze the effects of an interactive perturbation on dyadic processing. In particular, the manipulation of maternal responsiveness (immobile face) elicits in the child a stress that can be assessed at a behavioral level (still-face effect - Mesman et al 2009) and at physiological level (vagal activity measured by the sinus-respiratory arrhythmia, ASR - Moore and Calkins 2004). Sravish and colleagues (2013) applied the SSG to investigate the relationship between dyadic functioning and behavioral response to maternal SF, however it remains unexplored how dyadic functioning, assessed through SSG measurements, is associated with the vagal reactivity of the child. METHOD 38 children of 4 months and their mothers participated in the SF procedure. For each episode (Play, Still-Face, Reunion) the behaviors of both were coded second by second through 4 mutually excluded codes: 1. negative involvement (NEG), 2. object / environment interest (OBJ), 3. monitoring social (MON), 4. positive involvement (POS). The electrocardiographic activity of the child was recorded during the SF and the ASR was obtained through the algorithm of Porges (1985). Previous studies on SF have documented individual differences in vagal reactivity associated with maternal non-responsiveness, a suppression of vagal tone is indicative of a greater capacity for emotional regulation (Moore and Calkins 2004). According to Bazhenova and colleagues (2001), the children were divided into two groups based on vagal reactivity: 1. Suppressors (SOP; N = 16), if they showed an attenuation of the ASR during the Still-Face episode; 2. Non-suppressors (N-SOP; N = 22), if they did not exhibit ASR suppression. Mothers did not exhibit NEG and OBJ behaviors. Consequently, an SSG matrix: 2 (maternal behavior) x 4 (child behavior) was adopted, with 8 dyadic states. For each dyadic state the following SSG indexes have been extrapolated: number of visits and latency time on the first visit. Two separate analysis series were conducted for each state and SSG index. 1. A comparison between Play and Reunion (paired t-tests) was conducted to examine the effects of SF on dyadic functioning when the interaction was resumed; 2. To verify the role of individual differences in vagal reactivity to maternal non-responsiveness on dyadic functioning, a comparison was made between SOP and N-SOP dyes (independent t-tests). RESULTS Between Play and Reunion there was an increase in the number of visits in the 'child NEG-mother MON' state (t = -2.66, p
Translated title of the contribution[Autom. eng. transl.] Application of the State Space Grid to the 4-month Still-Face procedure: infantile vagal reactivity and interactive dyadic dynamics
Original languageItalian
Title of host publicationXXVI CONGRESSO AIP SEZIONE DI PSICOLOGIA DELLO SVILUPPO E DELL'EDUCAZIONE
Pages95-96
Number of pages2
Publication statusPublished - 2013
EventXXVI Congresso AIP - Sezione di Psicologia dello Sviluppo e dell'Educazione - Milano
Duration: 19 Sep 201321 Sep 2013

Conference

ConferenceXXVI Congresso AIP - Sezione di Psicologia dello Sviluppo e dell'Educazione
CityMilano
Period19/9/1321/9/13

Keywords

  • Interazione madre-bambino
  • Metodologia
  • Psicobiologia
  • Still-Face

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