Young children's use of scale models: testing an alternative to representational insight

Using a symbolic object such as a model as a source of information about something else requires some appreciation of the relation between the symbol and what it represents. Representational insight has been proposed as essential to success in a symbolic retrieval task in which children must use information from a hiding event in a scale model to find a toy hidden in a room. The two studies reported here examine and reject a proposed alternative account for success in the model task. The results with 2.5-year-olds and 3-year-olds show that children's successful use of a scale model cannot be attributed to the simple detection of the correspondences between the objects in the two spaces. A higher-level representation of the model-room relation (i.e. representational insight) is required. The results are discussed with respect to the coalescence of multiple factors in determining performance in the model task.     

Current and Past Maternal Depression, Maternal Interaction Behaviors, and Children’s Externalizing and Internalizing Symptoms

Relations among past maternal depressive disorder, current depressive symptoms, current maternal interaction behaviors, and children's adjustment were examined in a sample of 204 women and their young adolescent offspring (mean age = 11.86, SD = 0.55). Mothers either had (n = 157) or had not (n = 57) experienced at least one depressive disorder during the child's life. Mothers and children participated in a problem-solving task, video-taped for later coding. Mothers with current depressive symptoms and those with histories of chronic/severe depressive disorders displayed fewer positive behaviors toward their children; mothers with current depressive symptoms also showed more negative behaviors with their children. The relation between mothers' depression history and their behavior during the interaction with their child was partially mediated by mothers' current mood state. Moreover, high levels of maternal negativity and low levels of positivity during the problem-solving task were related to children's externalizing problems. Maternal positivity partially mediated the relation between maternal depression and children's externalizing symptoms. These findings highlight the importance of providing parenting interventions for depressed mothers.     

Grasping the Nature of Pictures

The role of experience in the development of pictorial competence has been the center of substantial debate. The four studies presented here help resolve the controversy by systematically documenting and examining manual exploration of depicted objects by infants. We report that 9-month-old infants manually investigate pictures, touching and feeling depicted objects as if they were real objects and even trying to pick them up off the page. The same behavior was observed in babies from two extremely different societies (the United States and the Ivory Coast). This investigation of pictures occurs even though infants can discriminate between real objects and their depictions. By the time infants are 19 months of age, their manual exploration is replaced by pointing at depicted objects. These results indicate that initial uncertainty about the nature of pictures leads infants to investigate them. Through experience, infants begin to acquire a concept of "picture." This concept includes the fact that a picture has a dual nature (it is both an object and a representation of something other than itself), as well as knowledge about the culturally appropriate use of pictures.     

Knowing that strawberries are red and seeing red strawberries: the interaction between surface colour and colour knowledge information

This study investigates the interaction between surface and colour knowledge information during object recognition. In two different experiments, participants were instructed to decide whether two presented stimuli belonged to the same object identity. On the non-matching trials, we manipulated the shape and colour knowledge information activated by the two stimuli by creating four different stimulus pairs: (1) similar in shape and colour (e.g. TOMATO–APPLE); (2) similar in shape and dissimilar in colour (e.g. TOMATO–COCONUT); (3) dissimilar in shape and similar in colour (e.g. TOMATO–CHILI PEPPER) and (4) dissimilar in both shape and colour (e.g. TOMATO–PEANUT). The object pictures were presented in typical and atypical colours and also in black-and-white. The interaction between surface and colour knowledge showed to be contingent upon shape information: while colour knowledge is more important for recognising structurally similar shaped objects, surface colour is more prominent for recognising structurally dissimilar shaped objects.     

Maternal perinatal mental health: Associations with bonding,mindfulness, and self-criticism at 18 months’ postpartum

The perinatal period is a time of significant transition for women, with changes in maternal mental health from pregnancy to 18 months’ postpartum. This study specifically analyzes maternal self-criticism and mindfulness during pregnancy and at 18 months’ postpartum, and their associations with bonding. A longitudinal study (30 weeks’ gestation–18 months’ postpartum) assessed 32 mother–infant dyads, examining changes in maternal depression, anxiety, self-criticism, and mindfulness. In addition, associations between maternal variables during pregnancy and bonding were investigated. Maternal depression and self-criticism significantly increased from pregnancy to postpartum. Maternal anxiety, self-criticism, and facets of mindfulness during pregnancy were also associated with mother–infant bonding at 18 months. Maternal mental health during pregnancy is subject to change postchildbirth. The lack of control and autonomy accompanying motherhood may result in an increase in self-criticism during this period. Such feelings may elevate a woman's vulnerability to postpartum depression and have consequences for later maternal bonding. Early identification of at-risk mothers is important to increase likelihood of positive outcomes.     

The development of morphosyntactic ability in atypical populations: The acquisition of tag questions in children with early focal lesions and children with specific-language impairment

We examined the development of some features of morphosyntactic ability, specifically the acquisition of auxiliaries and use of agreement marking, along with sentence processing capacity. We used a conceptually simple task called the Tags Question Task, which is a method for evaluating a number of language processes in the production of a commonly used, familiar linguistic device. We compared the performance of children with early focal lesions (N=21), children with specific-language impairment (N=24), and typically developing children (N=24) matched in age and nonverbal ability; additional analyses involved comparisons of children matched on performance level. The data converge to support a "delayed" development of language behavior in our clinical groups, as overall patterns of performance and age-related changes on individual tag features and tag questions were strikingly similar in all three groups across a number of methods of comparison. Implications for theories of the development of brain-language relationships as they pertain to early focal brain damage, specific-language impairment, and the language acquisition process in typically developing children are discussed.     

Subjective and Objective Risks of Carrying a BRCA1/2 Mutation in Individuals of Ashkenazi Jewish Descent

This repeated measures study examines (1) the change in subjective risk of mutations pre- to postcounseling, (2) the accuracy of BRCAPRO estimates of mutations, and (3) the discrepancy between subjective risk and BRCAPRO estimates of mutations before and after genetic counseling. Ninety-nine Ashkenazi Jewish individuals pursued testing for BRCA1/2 mutations. Most had a personal cancer history (N = 51; family only: N = 48); and received uninformative negative results (N = 66; positives: N = 23; informative negative: N = 10). The coping strategy of defensive pessimism predicts that individuals will believe the worst case scenario to better cope with a potential negative outcome. Consistent with this, most felt they would have a mutation, if not mutations in both genes. The BRCAPRO model appeared to overestimate risk of having a mutation in this sample (p < .001). BRCAPRO overestimates notwithstanding, genetic counseling increased accuracy of subjective risk (p < .01). Individuals with a family-only cancer history had the least accurate estimates of risk (p < .05) and may need further intervention to either manage anxiety or improve knowledge.     

Modality Effects and the Development of the Word Length Effect in Children

Two experiments investigated the development of the word length effect in children aged 4 to 10 years, comparing auditory and visual stimuli. The question addressed was whether word length effects emerged earlier with auditory presentation or visual presentation, or whether they emerged at the same age regardless of presentation modality. Results provided evidence that word length effects emerge earlier with visual than auditory presentation. The implication of our results is that with visual presentation, 4-year-olds engage in some form of verbalisation strategy that involves obtaining phonological representations of picture names and mapping them on to articulatory output plans. This strategy is clearly verbal in nature, but is not necessarily characterised as cumulative verbal rehearsal.