Abstract
This study examined the relationship between psychological capital and business growth of manufacturing firms in South-South Nigeria. Specifically, it investigated the influence of self-efficacy, resilience, and hope on organizational growth outcomes. A cross-sectional survey design was adopted, with data collected from 225 managerial staff across 45 manufacturing firms using structured questionnaires. Data were analyzed using descriptive statistics and Spearman’s Rank Order Correlation Coefficient at a 0.05 significance level. Findings revealed strong positive relationships between self-efficacy, resilience, and hope with business growth, indicating that employees’ confidence, adaptability, and goal-directed optimism significantly contribute to improved sales, strategic expansion, innovation, and overall organizational performance. The study concludes that fostering psychological capital among employees enhances business growth and competitive advantage in manufacturing firms. It recommends that firms implement targeted training, mentorship, and goal-setting programs to strengthen these psychological resources and improves business growth.

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