Comparative Analysis of Chemistry Lab Anxiety Across Education Levels

Thesis Abstract

Experiences of anxiety in chemistry laboratory settings can influence student engagement, learning outcomes, and persistence across education levels, yet comparative cross-sectional evidence across undergraduate and graduate cohorts remains limited and fragmented. This study addresses the problem by examining how chemistry lab anxiety manifests and varies among first-year undergraduates, final-year undergraduates, master's students, and PhD candidates, and by identifying contextual factors that mediate or moderate these differences. The aim is to map the profile of lab anxiety across education levels, determine its predictive relationships with self-efficacy, prior achievement, and perceived safety, and to propose targeted instructional strategies to mitigate anxiety while enhancing learning gains. Specific objectives are (1) to quantify laboratory anxiety levels across four education levels using a validated instrument; (2) to compare anxiety scores across groups and examine interactions with gender, prior chemistry achievement, and laboratory experience; (3) to assess the relationships between lab anxiety and self-efficacy, intrinsic motivation, and perceived organizational support; (4) to identify narratives of anxiety-provoking situations through qualitative interviews and synthesize these with quantitative findings; (5) to develop actionable recommendations for curriculum design and pedagogy to reduce lab anxiety. The study adopts a cross-sectional, multi-site design integrating quantitative and qualitative components. A stratified random sample of 520 students will be recruited from four universities offering chemistry programs, comprising 130 first-year undergraduates, 130 final-year undergraduates, 130 master's students, and 130 PhD candidates. Quantitative data will be collected via a standardized Chemistry Laboratory Anxiety Scale (CLAS) with demonstrated reliability (Cronbach’s alpha ? .85) and validity through construct verification. Complementary scales will measure self-efficacy (Chemistry Self-Efficacy Scale), intrinsic motivation (Academic Motivation Scale), prior achievement (previous semester chemistry grades), and perceived safety (Safety Climate Inventory). Descriptive statistics, multivariate analysis of variance (MANOVA), and post hoc comparisons will examine mean differences in lab anxiety across education levels. Regression analyses will determine the predictive power of self-efficacy, motivation, and safety climate on lab anxiety, with interaction terms to explore moderating effects of gender and prior achievement. A thematic analysis of semi-structured interviews (n = 40; 10 from each level) will elucidate context-specific anxiety triggers, coping strategies, and perceived institutional support, with triangulation to the quantitative results. The analytical framework is guided by the Control-Value Theory of Achievement Emotions and Social Cognitive Theory, enabling a nuanced interpretation of how perceived control, value appraisals, self-efficacy, and social-contextual factors shape laboratory anxiety across advanced educational stages. Anticipated findings include statistically significant differences in lab anxiety levels across education levels, with higher anxiety observed among first-year undergraduates and PhD candidates relative to final-year undergraduates and master's students, albeit moderated by gender and prior achievement. It is expected that higher self-efficacy and intrinsic motivation will be associated with lower anxiety, while a stronger safety climate will buffer anxiety, particularly for novice students. Qualitative insights are expected to reveal distinct anxiety triggers, such as procedural uncertainty and performance judgment in early-stage students, versus research-oriented anxiety related to autonomy and experimental risk in graduate students. The study contributes to knowledge by creating a cross-sectional, educational-stage-specific map of chemistry lab anxiety, integrating quantitative and qualitative evidence to inform theory and practice. It advances the application of Control-Value Theory in laboratory contexts and demonstrates the role of safety climate and self-efficacy as modifiable determinants of anxiety across education levels. Practical implications include designing scaffolded laboratory curricula, explicit safety and process norms, peer-mentoring mechanisms, and targeted interventions to bolster self-efficacy and motivation. Recommendations emphasize early inoculation with structured, low-stakes lab experiences for undergraduates, graduated autonomy paired with continuous feedback for graduates, and institutional policies that cultivate a supportive safety and learning environment to reduce lab anxiety and enhance achievement across the chemistry education continuum.