Towards Robust Family-Infant Audio Analysis Based on Unsupervised Pretraining of Wav2vec 2.0 on Large-Scale Unlabeled Family Audio

To perform automatic family audio analysis, past studies have collected recordings using phone, video, or audio-only recording devices like LENA, investigated supervised learning methods, and used or fine-tuned general-purpose embeddings learned from large pretrained models. In this study, we advance the audio component of a new infant wearable multi-modal device called LittleBeats (LB) by learning family audio representation via wav2vec 2.0 (W2V2) pertaining. We show given a limited number of labeled LB home recordings, W2V2 pretrained using 1k-hour of unlabeled home recordings outperforms oracle W2V2 pretrained on 52k-hour unlabeled audio in terms of parent/infant speaker diarization (SD) and vocalization classifications (VC) at home. Extra relevant external unlabeled and labeled data further benefit W2V2 pretraining and fine-tuning. With SpecAug and environmental speech corruptions, we obtain 12% relative gain on SD and moderate boost on VC. Code and model weights are available.Comment: Accepted to Interspeech 202

Classification of Infant Sleep/Wake States: Cross-Attention among Large Scale Pretrained Transformer Networks using Audio, ECG, and IMU Data

Infant sleep is critical to brain and behavioral development. Prior studies on infant sleep/wake classification have been largely limited to reliance on expensive and burdensome polysomnography (PSG) tests in the laboratory or wearable devices that collect single-modality data. To facilitate data collection and accuracy of detection, we aimed to advance this field of study by using a multi-modal wearable device, LittleBeats (LB), to collect audio, electrocardiogram (ECG), and inertial measurement unit (IMU) data among a cohort of 28 infants. We employed a 3-branch (audio/ECG/IMU) large scale transformer-based neural network (NN) to demonstrate the potential of such multi-modal data. We pretrained each branch independently with its respective modality, then finetuned the model by fusing the pretrained transformer layers with cross-attention. We show that multi-modal data significantly improves sleep/wake classification (accuracy = 0.880), compared with use of a single modality (accuracy = 0.732). Our approach to multi-modal mid-level fusion may be adaptable to a diverse range of architectures and tasks, expanding future directions of infant behavioral research.Comment: Preprint for APSIPA202

Maternal dispositional empathy and electrodermal reactivity: Interactive contributions to maternal sensitivity with toddler-aged children.

The present study investigated maternal dispositional empathy and skin conductance level (SCL) reactivity to infant emotional cues as joint predictors of maternal sensitivity. Sixty-four mother-toddler dyads (31 boys) were observed across a series of interaction tasks during a laboratory visit, and maternal sensitivity was coded from approximately 55 minutes of observation per family. In a second, mother-only laboratory visit, maternal SCL reactivity to infant cues was assessed using a cry-laugh audio paradigm. Mothers reported on their dispositional empathy via a questionnaire. As hypothesized, mothers with greater dispositional empathy exhibited more sensitive behavior at low, but not high, levels of SCL reactivity to infant cues. Analyses examining self-reported emotional reactivity to the cry-laugh audio paradigm yielded a similar finding: dispositional empathy was related to greater sensitivity when mothers reported low, but not high, negative emotional reactivity. Results provide support for Dix’s (1991) affective model of parenting that underscores the combined contribution of the parent’s empathic tendencies and his/her own emotional experience in response to child emotions. Specificity of the Empathy × Reactivity interaction is discussed with respect to the context in which reactivity was assessed (infant cry versus laugh) and the type of sensitivity examined (sensitivity to the child’s distress versus non-distress)

The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least $4m$. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the $6.5m$ James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure

Correlates and antecedents of preschool children's friendship relations: An examination of emotion regulation, social understanding, and family relationships.

This two-part report examined the correlates and antecedents of preschool children's friendships. Part 1 concurrently examined children's social understanding and emotion regulation as correlates of friendship relations at age 4. Forty-nine 4-year-old children and their friends visited the laboratory playroom. Child-friend dyads were videotaped during a 20-minute free play and a 5-minute sharing task. Each child's understanding of emotion and false belief was assessed, and dyads were videotaped in a modified Disappointment Paradigm from which children's regulation of emotions and behavior were coded. Intercorrelations among the dyadic measures revealed two dimensions of friendship: friendship quality and conflict. Children's individual behavior was associated with the two friendship dimensions in a differentiated manner. As expected, children's emotion regulation and social understanding were associated with more positive and less negative aspects of friendship relations. Patterns of associations differed by interactive context, with the sharing task eliciting individual differences in conflict and negative behavior, in particular. Children's individual behavior toward friends tended to mediate associations between their emotion regulation and the dyadic friendship dimensions. Part 2 examined how the mother-infant and father-infant relationships at age 1 were related to children's interactions with friends at age 4. Children's social understanding and emotion regulation were also examined as mediators of family-friend linkages. A subsample of children (N = 30) and their parents from Part 1 participated. These families had previously participated in a short-term longitudinal study in which mother-infant and father-infant attachment and parenting behaviors were assessed. As hypothesized, when mothers and fathers were more sensitive during interaction with their infants at age 1, children were more responsive toward their friends at age 4. In addition, children who displayed resistant attachment behavior with mothers engaged in more conflict with friends, whereas avoidant attachment behavior with mothers was associated with less conflict. Little evidence of mediation was found, although children's attachment security with mothers and fathers was related to greater false belief understanding, and parental behavior was related to aspects of children's emotion regulation. Results are discussed in terms of how mothers and fathers contribute to different facets of children's friendship relations.Ph.D.Developmental psychologyIndividual and family studiesPsychologySocial SciencesSocial psychologyUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/132201/2/9959820.pd

Maternal dispositional empathy and electrodermal reactivity: Interactive contributions to maternal sensitivity with toddler-aged children.

The present study investigated maternal dispositional empathy and skin conductance level (SCL) reactivity to infant emotional cues as joint predictors of maternal sensitivity. Sixty-four mother-toddler dyads (31 boys) were observed across a series of interaction tasks during a laboratory visit, and maternal sensitivity was coded from approximately 55 minutes of observation per family. In a second, mother-only laboratory visit, maternal SCL reactivity to infant cues was assessed using a cry-laugh audio paradigm. Mothers reported on their dispositional empathy via a questionnaire. As hypothesized, mothers with greater dispositional empathy exhibited more sensitive behavior at low, but not high, levels of SCL reactivity to infant cues. Analyses examining self-reported emotional reactivity to the cry-laugh audio paradigm yielded a similar finding: dispositional empathy was related to greater sensitivity when mothers reported low, but not high, negative emotional reactivity. Results provide support for Dix’s (1991) affective model of parenting that underscores the combined contribution of the parent’s empathic tendencies and his/her own emotional experience in response to child emotions. Specificity of the Empathy × Reactivity interaction is discussed with respect to the context in which reactivity was assessed (infant cry versus laugh) and the type of sensitivity examined (sensitivity to the child’s distress versus non-distress)

Pediatric patient-centered transitions from hospital to home: improving the discharge medication process.

OBJECTIVES: Medications prescribed at hospital discharge can lead to patient harm if there are access barriers or misunderstanding of instructions. Filling prescriptions before discharge can decrease these risks. We aimed to increase the percentage of patients leaving the hospital with new discharge medications in hand to 70% by 18 months. METHODS: We used sequential plan-do-study-act cycles from January 2015 to September 2016. We used statistical process control charts to track process measures, new medications filled before discharge, and rates of bedside delivery with pharmacist teaching to the inpatient pediatric unit. Outcome measures included national patient survey data, collected and displayed quarterly, as well as caregiver understanding, comparing inaccuracy of medication teach-back with and without medications in hand before discharge. RESULTS: Rates of patients leaving the hospital with medications in hand increased from a baseline of 2% to 85% over the study period. Bedside delivery reached 71%. Inaccuracy of caregiver report during a postdischarge phone call decreased from 3.3% to 0.7% ( CONCLUSIONS: By using an engaged interprofessional team, we optimized use of our on-site outpatient pharmacy and increased the percentage of pediatric patients leaving the hospital with new discharge medications in hand to \u3e80%. This, accompanied by increased rates of bedside medication delivery and pharmacist teaching, was associated with improvements in caregiver discharge-medication related experience and understanding