Georgios D. Sideridis

Goal Orientation, Academic Achievement, and Depression: Evidence in Favor of a Revised Goal Theory Framework

The objective of this investigation was to evaluate and expand the goal-orientation model of depression vulnerability proposed by B. M. Dykman (1998), which posits that a performance orientation creates a vulnerability to depression through repeated failure. This hypothesis was tested in 5 studies with students in Grades 5 and 6. A performance-approach goal orientation was associated positively with achievement, effort, and persistence and negatively with anxiety and depression. Stress and causal components of the theory were supported by results of structural equation modeling, which suggested that negative affect, low achievement, and depression are correlates of performance-avoidance goals. Empirical evidence supported the hypothesis that early negative effects of a performance-approach orientation may be due to the presence of avoidance motivation. Findings suggest that dichotomizing performance goal orientations is instrumental to a sound understanding of motivation, achievement-related processes, and depression.

Attachment, social support and well-being in young and older adults

The present study examined the link between attachment, social support and well-being in young and older adults. The results from multi-group path analyses showed significant between-group differences in the links between attachment, perceived support and well-being. Anxious attachment and well-being were inversely associated and this was stronger for the younger group than it was for the older group. Avoidant attachment was negatively related to perceived support satisfaction in the older age group only, and perceived support mediated the effects of avoidant attachment on mental health and loneliness in the older group. Generally, perceived satisfaction with support was more strongly related with well-being in older adults. The results point to differential links of insecure attachment styles with perceived support in different life-stages and to related cognitive, emotional and social processes.

Development of Lexical Mediation in the Relation Between Reading Comprehension and Word Reading Skills in Greek

This study focuses on the shared variance between reading comprehension and word-level reading skills in a population of 534 Greek children in Grades 2 through 4. The correlations between measures of word and pseudoword accuracy and fluency, on the one hand, and vocabulary and comprehension skills, on the other, were sizeable and stable or increasing with grade. However, the unique contribution of word reading to comprehension became negligible after vocabulary measures were entered in hierarchical regression analyses, particularly for higher grades, suggesting that any effects of decoding on comprehension may be mediated by the lexicon, consistent with lexical quality hypothesis. Structural modeling with latent variables revealed an invariant path across grades in which vocabulary was defined by its covariation with reading accuracy and fluency and affected comprehension directly. It is argued that skilled word reading influences comprehension by strengthening lexical representations, at least when phonological decoding can be relatively effortless.

The assessment of intrinsic and extrinsic motivation and amotivation: Validity and reliability of the Greek version of the Academic Motivation Scale

Self‐determination theory provides an integrated conception of school‐ and academic motivation. The theory proposes a continuum comprising three types of motivation: intrinsic motivation (IM), extrinsic motivation (EM), and amotivation (AM), characterised by seven dimensions (IM = to know, to accomplish and to experience stimulation, EM = external regulation, introjection and identification, and Amotivation). The purpose of the present study was to examine the psychometric properties of the Academic Motivation Scale (AMS) with Greek high school students. Two studies were conducted to examine the factorial, construct, concurrent and predictive validity of the scale along with its reliability properties. Confirmatory factor analyses supported the proposed seven‐factor structure. The scale showed satisfactory levels of internal consistency and temporal stability. Additionally, indices of the scale’s construct, concurrent, and predictive validity were in the desired direction. These findings support the use of the Greek version of the AMS for the assessment of intrinsic motivation, extrinsic motivation, and amotivation.

Using Structural Equation Modeling to Assess Functional Connectivity in the Brain Power and Sample Size Considerations

The present study assessed the impact of sample size on the power and fit of structural equation modeling applied to functional brain connectivity hypotheses. The data consisted of time-constrained minimum norm estimates of regional brain activity during performance of a reading task obtained with magnetoencephalography. Power analysis was first conducted for an autoregressive model with 5 latent variables (brain regions), each defined by 3 indicators (successive activity time bins). A series of simulations were then run by generating data from an existing pool of 51 typical readers (aged 7.5-12.5 years). Sample sizes ranged between 20 and 1,000 participants and for each sample size 1,000 replications were run. Results were evaluated using chi-square Type I errors, model convergence, mean RMSEA (root mean square error of approximation) values, confidence intervals of the RMSEA, structural path stability, and Δ-Fit index values. Results suggested that 70 to 80 participants were adequate to model relationships reflecting close to not so close fit as per MacCallum et al.’s recommendations. Sample sizes of 50 participants were associated with satisfactory fit. It is concluded that structural equation modeling is a viable methodology to model complex regional interdependencies in brain activation in pediatric populations.

Predicting LD on the Basis of Motivation, Metacognition, and Psychopathology An ROC Analysis

We examined how strongly motivation, metacognition, and psychopathology acted as predictors of learning disabilities (LD). The results from five studies suggested that level of motivation (as shown through self-efficacy, motivational force, task avoidance, goal commitment, or self-concept) was highly accurate in classifying students with or at risk for LD. Metacognition and psychopathology were also strong predictors. Classification accuracy using receiver operating characteristic (ROC) curves ranged between 77% and 96%. These rates were much higher than the chance-level (i.e., 50%—55%) rates sometimes yielded by cognitive indices. Linear discriminant function (LDF) analysis substantiated classification accuracy. These results suggest that motivation, metacognition, and psychopathology are strong predictors of LD. Understanding the influence of these characteristics may help researchers and practitioners more accurately screen and treat students with LD.

Why Are Students With LD Depressed? A Goal Orientation Model of Depression Vulnerability

The thesis of the present study was that failure in achievement tasks may constitute a stress factor that can trigger a depression episode, particularly for students with learning disabilities (LD), and that a particular motivational pattern may constitute a cognitive diathesis for depression. Participants were 104 students referred for LD who were drawn from a pool of approximately 900 students from Grades 5 and 6. Students were challenged with a series of difficult math exercises, and their achievement behaviors were examined as a function of achievement goal orientations. Results from structural equation modeling provided empirical support of the contention that performance—avoidance goals may account for a series of negative cognitions and affect. Direct positive paths linked performance— avoidance goals to anxiety, depression, and negative affect; negative paths were revealed with regard to self-esteem and positive affect. Thus, performance—avoidance goals may possess elements of the diathesis mechanism described by Dykman (1998), constituting a vulnerability factor that triggers the mechanism of depression when negative events are in place.

A Cross-Cultural Examination of Typically Developing Children's Attitudes toward Individuals with Special Needs.

This study explores childrens attitudes toward individuals with special needs in Greece and in the United States. A total of 196 kindergarten‐age children participated in the study. Childrens attitudes were examined using the Acceptance Scale for Kindergartners‐Revised (ASK‐R) and were further explored with the use of an open‐ended interview. In addition, the Inventory of Disability Representation (IDR) was used to collect information about how individuals with special needs are represented in school and classroom environments through books, displays, materials and curriculum. The results indicated that children in Greece and the United States were accepting of individuals with special needs. Also, children attending inclusive kindergartens held more positive attitudes when compared with children attending non‐inclusive kindergartens. Results from the interviews provided further information that contributes to the understanding of childrens perceptions of people with special needs and the reasons why children become more or less favourably disposed towards individuals with special needs. Finally, IDR results indicated that the classrooms in Greece had low representations of individuals with special needs compared with US classrooms, which had moderate and high representations of individuals with disabilities in the classroom and school environments.

CLASSIFICATION OF STUDENTS WITH READING COMPREHENSION DIFFICULTIES: THE ROLES OF MOTIVATION, AFFECT, AND PSYCHOPATHOLOGY

Attempts to evaluate the cognitive-motivational profiles of students with reading comprehension difficulties have been scarce. The purpose of the present study was twofold: (a) to assess the discriminatory validity of cognitive, motivational, affective, and psychopathological variables for identification of students with reading difficulties, and (b) to profile students with and without reading comprehension difficulties across those variables. Participants were 87 students who scored more than 1.3 SD below the mean on a standardized reading comprehension battery and 500 typical students in grades 2 through 4. Results using linear discriminant analyses indicated that students with reading comprehension difficulties could be accurately predicted by low cognitive skills and high competitiveness. Using cluster analysis, students with significant deficits in reading comprehension were mostly assigned to a low skill/low motivation group (termed helpless) or a low skill/high motivation group (termed motivated low achievers). Based on these findings, it was concluded that motivation, emotions, and psychopathology play a pivotal role in explaining the achievement tendencies of students with reading comprehension difficulties.

The Components of the Simple View of Reading: A Confirmatory Factor Analysis

The simple view of reading admits two components in accounting for individual differences in reading comprehension: a print-dependent component related to decoding and word identification, and a print-independent one related to oral language comprehension. It has been debated whether word or nonword reading is a better index of the print-dependent component and whether vocabulary measures fit within the print-independent component or constitute an additional factor. Here we apply a confirmatory factor analysis on a set of relevant measures from 488 Greek children in Grades 3–5 independently of reading comprehension. The results indicate that word and nonword reading do not constitute distinct factors but covary along the same two dimensions of accuracy and fluency. Oral vocabulary measures group with listening comprehension, resulting in excellent model fits. Strong correlations were observed between the latent factors of the purported print-dependent and print-independent components, consistent with an approach that focuses on the strong relations among semantic, orthographic, and phonological aspects of word representations.