Indigenous Ecuadorian children: Parental education, parental wealth and children's cognitive ability level

Piagetian Tasks and Psychometric Intelligence: Different or Similar Constructs?

Research on cognitive ability is done in different paradigms. In the Piagetian paradigm, cognitive ability focuses on cognitive development along qualitative stages. Interactive real scenarios, "Piagetian tasks", are constructed for measurement. According to age, tasks differing in complexity are applied in individual measurements. In the psychometric paradigm, the investigation of cognitive ability focuses on individual differences. Intelligence is seen as a quantitative construct with gradual differences between persons and ages. Paper-and-pencil tests with items differing in difficulty are used for IQ measurement of single persons or school classes. However, do those tasks measure two distinct cognitive abilities? Solving tasks in both approaches requires basic (speed, working memory) and complex cognitive abilities (reasoning, understanding). Regarding empirical relationships, we used three Austrian samples (in kindergarten four to six years old N = 40, in primary school six to eight years old N = 40, and nine to ten years old N = 41). They were tested with psychometric tests (Raven CPM or SPM) and Piagetian tasks. In addition, mental speed (ZVT) was measured in the two school samples. The average observed correlation between IQ and Piagetian tasks was r = .51. In factor analyses, the tests loaded on a common factor of general intelligence. Further analyses revealed that mental speed is correlated more strongly with psychometric (r = .50) than with Piagetian tasks (r = .39), while Piagetian tasks are more related to parental education indicators (speed: r = .11, Raven: r = .20, Piaget: r = .25).

Relationships Among Home Literacy Behaviors, Materials, Socioeconomic Status, and Early Literacy Outcomes Across 14 Low- and Middle-Income Countries

Most research on reading acquisition is conducted in high-income countries, and the majority of the limited research from middle- and low-income countries focuses exclusively on school settings. We therefore know little about how home literacy environments (HLEs) relate to early reading skill acquisition in low-resource settings. This study uses baseline data from 18 Save the Children (SC) project sites across 14 countries in Central America, Asia, and Africa to address several questions. First, we examine the structure of HLE in the data set, with a particular focus on its relationship to socioeconomic status (SES). Second, we extend our measurement model to examine the relationship between HLE and early literacy skills across the sample of more than 14,000 first- and second-grade boys and girls (mean age: 8.4 years) from diverse socioeconomic backgrounds. We conclude that SES, home reading behaviors, and home reading materials are separate, though related constructs, and that materials in the home are a moderately strong predictor of early reading in these contexts. Our findings indicate that studies investigating literacy environments in low- and middle-income countries (LMICs) should clearly and distinctly conceptualize SES, literacy behaviors, and literacy materials. In addition, the robustness of the relationships between the presence of reading materials in the home and children’s early literacy skills suggests that increasing access to these materials may enhance skill development in low-resource contexts.