Statistical learning of action: The role of conditional probability

Identification of distinct units within a continuous flow of human action is fundamental to action processing. Such segmentation may rest in part on statistical learning. In a series of four experiments, we examined what types of statistics people can use to segment a continuous stream involving many brief, goal-directed action elements. The results of Experiment 1 showed no evidence for sensitivity to conditional probability, whereas Experiment 2 displayed learning based on joint probability. In Experiment 3, we demonstrated that additional exposure to the input failed to engender sensitivity to conditional probability. However, the results of Experiment 4 showed that a subset of adults—namely, those more successful at identifying actions that had been seen more frequently than comparison sequences—were also successful at learning conditional-probability statistics. These experiments help to clarify the mechanisms subserving processing of intentional action, and they highlight important differences from, as well as similarities to, prior studies of statistical learning in other domains, including language.     

Differences in school psychological report writing as a function of doctoral vs. nondoctoral training

This study was designed to examine differences in the report-writing skills of doctoral and nondoctoral school psychologists. Fourteen doctoral level and 13 specialist level public school psychologists provided the 50 school psychological reports used in this study; 25 reports were written by doctoral level school psychologists and 25 were written by specialist level school psychologists. The reports were categorized according to the referral problem: mental retardation, learning disability, reading problem, emotional difficulty, and behavior problem. The psychological reports were rated by a panel of educators using an 18-item rating scale. The results indicated no significant differences between the ratings of the doctoral and nondoctoral school psychologists' reports. Educators did, however, consistently rate reports that analyzed mentally retarded children's evaluations better than any of the other four report categories, regardless of the degree level of the school psychologist. Results indicated that both specialist level and doctoral level school psychologists are capable of meeting the needs of educators in the area of report writing.     

How students conceptualize grade‐based acceleration in inclusive settings

Despite extensive research supporting educational acceleration for students with high academic ability, some psychologists, counselors, and educators express concerns about accelerative interventions. Such concerns often hinge on uncertainty about social acceptance, even in inclusive education settings. Research on acceleration has consistently shown benefits for students with high ability; however, there is a lack of research about grade‐based acceleration in inclusive schools. This study engaged two groups of students in group concept mapping processes to examine how they conceptualized beliefs about grade‐based acceleration in inclusive schools. First, 26 students in inclusive classes generated beliefs about grade‐based acceleration. Then they, and a group of 14 students with high ability, structured the data by sorting and rating a synthesized list of the generated beliefs. We analyzed the sorted data using multidimensional scaling and hierarchical cluster analysis. The resultant cluster maps revealed some differences and some similarities in the ways that the two groups of students conceptualized beliefs about educational acceleration. Practical implications are discussed.     

Infants' Reliance on a Social Criterion for Establishing Word-Object Relations

The language children hear presents them with a multitude of co-occurrences between words and things in the world, and they must repeatedly determine which among these manifold co-occurrences is relevant. Social factors—such as cues regarding the speaker's referential intent—might serve as one guide to whether word-object covariation should be registered. In 2 studies, infants (15–20 months and 18–20 months in Studies 1 and 2, respectively) heard novel labels at a time when they were investigating a single novel object; in one case the label was uttered by a speaker seated within the infant's view and displaying concurrent attention to the novel toy (coupled condition), whereas in the other case the label emanated from a speaker seated out of the infant's view (decoupled condition). In both studies, subsequent comprehension questions indicated that infants of 18–20 months registered a stable link between label and object in the coupled condition, but not in the decoupled condition, despite the fact that covariation between label and object was equivalent in the 2 conditions. Thus, by 18–20 months children are inclined to establish a mapping between word and object only when a speaker displays signs of referring to that object.     

The effect of financial education on pupils’ financial knowledge and skills: Evidence from a Solomon four-group design

Abstract

The present study used a Solomon four-group quasi-experimental design to examine the short-term effect of a large-scale national financial education program on children’s knowledge and skills in responsible spending and performing transactions effectively. Our study included a representative sample of Dutch pupils in the fifth grade of primary school (N?=?2,650). Controlling for different children-specific characteristics, results showed that the program increased pupils’ knowledge and skills scores in performing transactions effectively, but not in responsible spending. The insights gained from the present study show how financial education programs that enable children to immediately apply what they learn in practice can improve children’s knowledge and skills regarding certain financial competencies.     

Do Children with Autism Use the Speaker's Direction of Gaze Strategy to Crack the Code of Language?

Normal toddlers infer the referent of a novel word by consulting the Speaker's direction of Gaze. That is, they use the Speaker's Direction of Gaze (SDG) strategy. This is a far more powerful strategy than the alternative, the Listener's Direction of Gaze (LDG) strategy. In Study 1 we tested if children with autism, who have well-documented impairments in joint attention, used the SDG or the LDG strategy to learn a novel word for a novel object. Results showed that although 70.6% of children with mental handicap passed the test by making the correct mapping between a novel word and a novel object, via the SDG strategy, only 29.4% of children with autism did so. Instead, their reliance on the LDG strategy led to mapping errors. In Study 2 a group of normal children, whose chronological age (24 months old) was eqated with the verbal mental age of the 2 clinical groups in Study I, was tested using a similar procedure. Results showed that 79% of this normal group passed the test by making the correct mapping between a novel word and a novel object using the SDG strategy. Taken together, the results from both studies suggest that children with autism are relatively insensitive to a speaker's gaze direction as an index of the speaker's intention to refer . This result is consistent with previous findings showing that children with autism are relatively "blind" to the mentalistic significance of the eyes. Discussion centers on how the absence of an SDG strategy might disrupt specific aspects of language development in autism.     

Addressing Child Maltreatment in New Zealand: Is Poverty Reduction Enough?

Jonathan Boston provides an insightful analysis of the emergence and persistence of child poverty in New Zealand (Boston, 2014, Educational Philosophy and Theory). His remarks on why child poverty matters are brief but, as he reports, “[t]here is a large and robust body of research on the harmful consequences of child poverty” (Boston 2014, pp. 10–11). One cost he does not explicitly mention is the increased risk of maltreatment faced by children living in poverty. Given the clear correlation between risk of abuse and poverty, Boston’s recommendations might be expected to go some way to addressing New Zealand’s appalling child maltreatment statistics. However, Boston himself identifies both fiscal and political barriers to the implementation of his proposed strategy. “Fundamentally”, he observes, “without adequate multi-party agreement, it will be hard to reduce child poverty on a durable basis” and “[c]urrently, such agreement is lacking” (Boston, 2014, p. 21). Even if we accept Boston’s strategies for child-poverty reduction, then, it is prudent to consider other responses to the consequences of child poverty. Significant and controversial aspects of New Zealand’s 2013 White Paper for Vulnerable Children can be read in this light, and one of them – the proposal to use predictive risk modeling (PRM) to identify children at risk of maltreatment – is the focus of this commentary.     

Dwell times showcase how goal structure informs preschoolers’ analysis of unfolding motion patterns

Using Hard et al.’s (2011) dwell-time paradigm, 85 preschoolers (aged 2.5–4.5; 43 female; primarily from white families) advanced at their own pace through one of three slideshows. All slideshows depicted an actor reaching toward, grasping, and retrieving a ball. However, motion patterns differed for one slideshow (straight-reach) relative to the other two (arcing-reaches), and one of the arcing-reach slideshows depicted a violation of typical goal-related motion. Preschoolers’ knowledge of goal structure systematically modulated attention to event boundaries across slideshows despite surface differences, even when controlling for pixel change (an index of changes in motion). These findings showcase the value of the dwell time paradigm, and illuminate how children deploy attention as goal-related expectations shape their analysis of continuously unfolding activity.     

Claims and counterclaims: institutional arrangements and farmers’ response to the delivery and adoption of innovations in the Okavango Delta,Botswana

Purpose: This article examined how institutional factors influencing the promotion of two elephant crop-raiding deterrent innovations (ECDIs) introduced to farmers through a ministry-based extension system in the Okavango Delta, Botswana, have impacted farmers’ adoption behaviour. Methodology: A standardised interview schedule was used to elicit responses from 388 randomly sampled subsistence arable farmers on how institutions influenced the adoption of ECDIs in five communities in the study area. This was complemented by focus group discussions to obtain in-depth information on the subject-matter. Key informants interviews were also conducted with purposively selected extension agents, village project committee chairpersons and village dikgosi. Findings: Four institutional factors were found to be critical for the adoption of ECDIs. These include institutional relations, availability and/or supply of deterrent innovation inputs, farmers’ contact with extension agents and government support for extension services. Theoretical Implications: Immediate and widespread adoption of ECDIs in the ever-changing socio-economic and political environment can be enhanced by context-specific institutional arrangements in addressing social and organisational constraints to innovation adoption. Originality: This paper invoked organisational theory to contribute to the scholarly debate on how agricultural extension systems influence farming clientele’s behaviour and social change. It offers the first attempt in the investigation of the role of extension and associated institutions/organisations in promoting adoption of ECDIs among subsistence farmers in the Okavango Delta, Botswana. Findings indicate that local farmers do not perceive extension agencies to hold monopoly of ideas and solutions to their unique problems.