Early Reading and Math Developmental Trajectories: Examining Influences of Specific Learning Disabilities and...

Area of Science:

• Child Development
• Educational Psychology
• Learning Disabilities

Background:

• Socioeconomic status (SES) and specific learning disability (SLD) are known risk factors for academic achievement.
• Understanding their combined effects on developmental trajectories is crucial for targeted interventions.

Purpose of the Study:

• To examine the impact of SES and SLD on reading and math developmental trajectories from kindergarten to fifth grade.
• To investigate potential interactions between SES and SLD on academic growth.

Main Methods:

• Utilized the ECLS-K:2011 dataset for longitudinal analysis.
• Retrospectively classified students based on SLD status by fifth grade.
• Compared academic skills and growth trajectories between students with and without SLD, and across SES levels.

Main Results:

• Students with SLD demonstrated lower academic skills at kindergarten entry and stable group differences over time.
• Lower-SES students also showed lower initial skills, with largely parallel growth trajectories to higher-SES peers.
• Few significant interactions between SLD and SES were found; SES effects on reading growth were more pronounced in students without SLD early in schooling.

Conclusions:

• Both SLD and low SES independently predict lower academic performance.
• The intersection of SLD and low SES does not qualitatively alter developmental trajectories, suggesting distinct underlying mechanisms.
• Interventions should consider the independent contributions of SLD and SES to academic outcomes.