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Private Investment Dynamics in Ghana: Sectoral Patterns and Environmental Influences
Abukari Salifu Atchulo
Abdul-Rahaman Abdul-Rashid
Samuel Ataribanam
Abstract
This study explores the determinants of private investment in Ghana using data from 1980 to 2021, a period marked by economic liberalization policies, structural adjustment programs (SAPs) in the 1980s and 1990s, financial sector reforms, and the discovery of oil in the 2000s, all of which significantly influenced investment patterns, utilizing Ordinary Least Squares (OLS) multiple regression. Data from World Bank and Bank of Ghana databases was used for the analysis. This study is based on the Neoclassical Investment Theory, which posits that private investment is driven by the cost of capital and expected returns. This theory provides a foundation for understanding the determinants of private investment. Employing an explanatory research design and a quantitative approach, the study examines the relationship between key economic factors and private investment in Ghana. The findings reveal that Gross Domestic Product (GDP), external debt, and interest rates positively influence private investment, while inflation and trade openness have negative effects. Specifically, the study concluded that GDP (β = 3.019, p = 0.003), external debt (β = 0.961, p = 0.005), and interest rates (β = 0.595, p = 0.057) positively impact private investment, whereas inflation (β = -0.362, p = 0.004) and trade openness (β = -0.872, p = 0.037) exert negative effects. In terms of sectoral investment, manufacturing ($742.63M), building and construction ($572.30M), and mining ($483.33M) attract the highest levels of investment, whereas liaison ($79.66M) and export trade ($13.94M) receive lower amounts. Additionally, agriculture (β = 0.023, p = 0.065), manufacturing (β = 0.004, p = 0.002), mining (β = 0.018, p = 0.055), and tourism (β = 0.010, p = 0.020) sectors positively contribute to private investment. Furthermore, a conducive investment environment—characterized by a strong regulatory framework (β = 0.035, p = 0.008), political stability (β = 0.028, p = 0.018), and access to finance (β = 0.031, p = 0.006)—plays a crucial role in fostering private investment in Ghana. Policy recommendations include maintaining macroeconomic stability, implementing targeted incentives for the manufacturing and mining sectors, and improving key investment environment factors.
