This study assessed the relation between mother mental state language and child desire language and emotion understanding in 15-24-month-olds. At both time points, mothers described pictures to their infants and mother talk was coded for mental and nonmental state language. Children were administered 2 emotion understanding tasks and their mental and nonmental state vocabulary levels were obtained via parental report. The results demonstrated that mother use of desire language with 15-month-old children uniquely predicted a child's later mental state language and emotion task performance, even after accounting for potentially confounding variables. In addition, mothers' tendency to refer to the child's over others' desires was the more consistent correlate of mental state language and emotion understanding.

This continuation of a previous study (Taumoepeau & Ruffman, 2006) examined the longitudinal relation between maternal mental state talk to 15- and 24-month-olds and their later mental state language and emotion understanding (N= 74). The previous study found that maternal talk about the child's desires to 15-month-old children uniquely predicted children's mental state language and emotion task performance at 24 months. In the present study, at 24 months of age, mothers' reference to others' thoughts and knowledge was the most consistent predictor of children's later mental state language at 33 months. Vygotsky's zone of proximal development provides a framework within which maternal talk, first, about the child's desires and then about others' thoughts and knowledge scaffolds children's social understanding.

Many authors have argued that infants understand goals, intentions, and beliefs. We posit that infants' success on such tasks might instead reveal an understanding of behaviour, that infants' proficient statistical learning abilities might enable such insights, and that maternal talk scaffolds children's learning about the social world as well. We also consider which skills and insights are likely to be innate, and why it is difficult to say exactly when children understand mental states as opposed to behaviours.

This study describes trajectories of early literacy skill development of 99 children (n ϭ 55 boys) in their first year of primary school in New Zealand (NZ). Children were assessed twice weekly for 8 weeks on Dynamic Indicators of Basic Early Literacy Skills (DIBELS; Good & Kaminski, 2011) First Sound Fluency (FSF) and AIMSweb Letter Sound Fluency (LSF;Shinn & Shinn, 2002), with other early literacy and beginning reading skills assessed before and after progress monitoring. FSF and LSF growth trajectories were modeled separately. Multilevel modeling indicated improved performance; however, growth mixture modeling indicated 3 growth trajectories (i.e., latent classes; FSF and LSF, respectively): typical (77.6% of children, 65.7%), developing (10.8%, 14.6%), and limited progress (11.6%, 19.7%). Beginning of year screening was sometimes associated with latent class membership, whereas latent class membership differentiated mid-and year-end literacy skills. Results support progress monitoring of early literacy skills within the NZ context to aid earlier identification of children at-risk for difficulties with reading acquisition. Impact and ImplicationsThis study demonstrated that monitoring children's progress on early literacy skills over one term can reflect skill development in the first year of school. Although most children's performance improved over time, this study identified distinct growth trajectories, finding some children with low initial performance who showed limited progress. This research supports screening and progress monitoring for earlier identification and provision of supports to children experiencing challenges with reading acquisition.

The relation between children's mental state knowledge and metaknowledge about reading was examined in 2 studies. In Study 1, 196 children (mean age = 9 years) were tested for verbal ability (VA), metaknowledge about reading, and mental state words in a story task. In Study 2, the results of Study 1 were extended by using a cross-lagged design and by investigating older children (N = 71, mean ages = 10 years at Time 1 and 11 years at Time 2) for mental state knowledge, metaknowledge about reading, and VA. Results showed a significant relation between early cognitive (but not emotion) mental state knowledge and later metaknowledge about reading, controlling for VA. Results suggest close links between different aspects of children's knowledge about the mind.

Young (<36 years) and older (>59) adults viewed videos in which the same individual committed a faux pas, or acted appropriately, toward his coworkers. Older participants did not discriminate appropriate and inappropriate behaviors as well as young participants. Older participants also scored lower than young participants on an extensive battery of emotion recognition tests, and emotion performance fully mediated age differences in faux pas discrimination. The results provide further evidence for the role of emotion perception in a range of important social deficits.

This study examined the impact of training mothers to talk elaboratively about the past on children’s understanding of mind. The researchers randomly assigned 102 mothers of 19-month-old children to a training or no-training group. Mothers in the experimental group received training in an elaborative style of talking about the past when children were 21, 25, and 29 months of age. Children were assessed on a battery of theory-of-mind tasks at 44 months. Results showed that children with initially lower levels of expressive vocabulary in the trained group benefited from elaborative talk about the past in terms of their understanding of mind. The article discusses the role of elaborative reminiscing, and specifically the importance of elaborative questions about the past, in children’s growing representational skills.

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