Valid data are essential for making correct theoretical and practical implications. Hence, efficient methods for detecting and excluding data with dubious validity are highly valuable in any field of science. This paper introduces the idea of applying autocorrelation analysis on self-report questionnaires with single-choice numbered, preferably…

The long-term effects on academic self-concept of grade retention are unclear. The objective is to examine the progression of academic self-concept in relation to school performance for retained students and non-retained students. The academic self-concept of 5712 students (1381 retained students) was evaluated at the fourth and eighth grade of…

Grade repetition is an issue with important educational implications. This study analyzes the effect of cognitive variables, socio-economic status, as well as the interaction of socioeconomic status with ethnic origin, on the probability of not repeating. Data were collected to calculate socioeconomic status using the Hollingshead Socioeconomic…

Across the world, numerous students are being bullied at school. Bullying is often caused by a power imbalance between students. Therefore, identifying potential sources of such a power imbalance can prevent school bullying from happening. Based on the labelling theory, we expect that grade retention can lead to such a power imbalance and,…

Purpose: This study examined the extent to which prelingual cochlear implant (CI) users show a slowed speaking rate compared with typical-hearing (TH) talkers when repeating various speech stimuli and whether the slowed speech of CI users relates to their immediate verbal memory. Method: Participants included 10 prelingually deaf teenagers who…

Objective: Childhood maltreatment has been consistently linked to posttraumatic stress disorder (PTSD) symptoms among college students and yoga may buffer the effects. The current study examined the frequency of college student's yoga practice over the past year as a moderator of childhood maltreatment and PTSD symptoms in the past 30 days.…

The internal validity of observational study is often subject to debate. In this study, we define the counterfactuals as the unobserved sample and intend to quantify its relationship with the null hypothesis statistical testing (NHST). We propose the probability of a robust inference for internal validity, that is, the PIV, as a robustness index…

In recent years, McNamara, and associates Hambrick and Oswald, conducted and published studies which purportedly showed deliberate practice exerts less powerful main effects than presented and popularized in the press, public discourse, and professional circles. Their central aim seemed to be one of correcting a particular misperception, as they…

Recent studies have found correlations between sentence-level tests and reading comprehension. However, the task demands of sentence-level tests are not well understood. The present study investigated syntactic knowledge as a construct by examining the convergent and discriminant validity of two sentence-level tasks, sentence comprehension and…

The purpose of this work is to identify contextual variables that help to explain the occupational aspirations of Spanish 15-year-old students. This is done by performing a secondary analysis of the PISA2018 test. Data have been analysed using decision trees introducing the students' expected occupational status as a dependent variable (DV), and…

Previous studies on the impact of grade retention on academic self-concept suffer from inconclusive findings. There is no consensus if retention yields long-term benefits that could offset its opportunity costs and, if so, under what conditions. Therefore, this article examines whether grade retention decreases academic self-concept and whether…

Background and aims: Previous studies suggest that syntactic development in children with intellectual disabilities (ID) is positively correlated with verbal short-term memory (VSTM). This study investigated the characteristics of syntactic development and their relationships of VSTM in children with ID based on type. Methods: The participants…

Purpose: Early language input plays an important role in child language and cognitive development (e.g., Gilkerson et al., 2018; Hart & Risley, 1995). In this study, we examined the effects of child's hearing status on lexical repetition properties of speech produced by their caregivers with normal hearing (NH). In addition, we investigated…

The purpose of this study was to explore the psychometric properties of the Portuguese version of the Child Routines Questionnaire: Preschool (CRQ:P), a parent-report measure developed to assess daily routines specific to preschool-age children. Participants included 208 parents of preschool children (M[subscript age] = 3.97 years old; SD = 0.95;…

Purpose: Adherence is a concern in dysphagia management. Poor adherence with recommendations can negatively affect treatment efficacy and patient outcomes. For exercise-based therapies, low adherence can alter the dose of exercise delivered to the muscle, which can diminish impact of exercise. It has been established that low adherence is a…