Research literature review is a fundamental step in any marketing research project as it provides the theoretical foundation and contextual background necessary for informed inquiry. In the Kenyan marketing sector, where consumer behaviour is influenced by diverse cultural, economic, and technological factors, understanding relevant theories guides researchers to frame their studies appropriately. This chapter explores the key theories applicable to marketing research, enabling professionals to design robust research frameworks that reflect Kenya’s unique market dynamics.

2.1 Relevant Theories of the Study

Theories in marketing research help explain, predict, and influence consumer behaviour and market trends. For Kenyan marketing professionals, applying these theories ensures that research findings are grounded in established knowledge, improving the validity and practical value of insights. This section analyses major theoretical frameworks that underpin marketing studies, emphasizing their relevance to Kenya’s commercial environment.

2.1.1 Consumer Behaviour Theory

Consumer behaviour theory examines how individuals or groups select, purchase, use, and dispose of products and services. It is essential for marketers in Kenya to understand these processes to tailor products and campaigns effectively in a market characterized by varied preferences and purchasing power.

Elements of Consumer Behaviour Theory

• Motivation: This refers to the internal drive that compels consumers to satisfy needs and wants. In Kenya, motivation might be influenced by social status or economic necessity, such as farmers prioritizing affordable inputs for crop production.
• Perception: Consumers interpret marketing stimuli based on their experiences and beliefs. For example, brand perception in urban Nairobi differs markedly from rural areas due to exposure and access.
• Learning: Past experiences shape future buying decisions. A customer at a local retail shop in Mombasa may prefer a brand based on previous satisfaction or recommendations.
• Attitudes: These are enduring evaluations of products or brands. Kenyan consumers might hold positive attitudes toward companies that demonstrate corporate social responsibility, such as supporting local communities.
• Decision-making process: This involves problem recognition, information search, evaluation, purchase, and post-purchase behaviour. For instance, a SACCO member deciding on an insurance product undergoes this process influenced by peer advice and product clarity.

Understanding these components allows marketers to predict and influence purchasing patterns effectively.

2.1.2 Market Segmentation Theory

Market segmentation theory involves dividing a broad consumer or business market into sub-groups based on shared characteristics. It enables marketers in Kenya to target specific groups with tailored marketing strategies, optimizing resource allocation and customer engagement.

Bases for Market Segmentation

• Geographic segmentation: Classifying markets by location such as urban, peri-urban, and rural areas. For example, mobile money services may be marketed differently in Nairobi compared to Kisumu.
• Demographic segmentation: Dividing consumers by age, gender, income, education, or occupation. A bank targeting youth savings accounts in universities applies demographic segmentation.
• Psychographic segmentation: Grouping consumers by lifestyle, personality, values, or social class. Eco-conscious consumers in Kenya’s growing middle class may be targeted with sustainable product lines.
• Behavioural segmentation: Based on consumer knowledge, attitudes, usage, or loyalty. A supermarket chain might offer loyalty programs to frequent shoppers in Nakuru.
• Benefit segmentation: Focusing on the benefits consumers seek from products, such as convenience or cost-saving. For instance, farmers may prefer agrochemicals that are easy to apply and affordable.

Segmenting markets allows Kenyan marketers to develop relevant value propositions and communication strategies.

2.1.3 Diffusion of Innovation Theory

This theory explains how new ideas, products, or technologies spread through a population over time. In Kenya, where technology adoption varies widely between urban and rural areas, understanding diffusion helps marketers introduce innovations effectively.

Stages and Categories in Diffusion

• Innovators: These are risk-takers who adopt new products first. For example, tech-savvy entrepreneurs in Nairobi might be the first to use mobile payment apps.
• Early adopters: Influential individuals who embrace innovations early and influence others. County government officials promoting e-governance systems represent early adopters.
• Early majority: The larger group who adopt innovations once proven. Farmers using newly introduced drought-resistant seeds tend to belong here.
• Late majority: Skeptical consumers who adopt after the majority. Small-scale retailers may only stock new products after demand is evident.
• Laggards: The last to adopt, often resistant to change. Some rural consumers might continue using traditional methods despite available alternatives.

For marketing professionals, tailoring communication and distribution strategies to these categories enhances product acceptance.

2.1.4 Theory of Planned Behaviour

This theory posits that consumer behaviour is driven by behavioural intentions influenced by attitudes, subjective norms, and perceived behavioural control. Kenyan marketers use this theory to predict purchase intentions and design interventions that encourage desired behaviours.

Components of the Theory of Planned Behaviour

• Attitudes toward the behaviour: Consumers’ positive or negative evaluation of performing the behaviour. For instance, a hotel promoting eco-friendly practices might shape positive attitudes among environmentally conscious tourists.
• Subjective norms: Social pressure perceived by the consumer to perform or not perform the behaviour. In Kenya, community leaders’ endorsement of a product can significantly influence buying decisions.
• Perceived behavioural control: The consumer’s perception of their ability to perform the behaviour. Accessibility of products in remote counties affects perceived control over purchase decisions.
• Behavioural intention: The motivational factor reflecting how hard people are willing to try to perform the behaviour. SACCO members intending to save regularly demonstrate this intention.
• Actual behaviour: The observable action taken by consumers, which marketers aim to influence positively.

This theory supports the design of marketing campaigns that address social influences and barriers to purchase.

Chapter Summary

This chapter explored the critical process of reviewing research literature in a study. It began by examining relevant theories that provide a foundation for understanding the research problem and guiding the investigation. The empirical literature review followed, highlighting previous studies and their findings to establish what is already known and where further inquiry is needed. Attention then shifted to the conceptual framework, which organizes key concepts and illustrates the relationships that the research intends to explore. Identifying research gaps was emphasized as an essential step to justify the study by pinpointing areas that have not been adequately addressed. Together, these components form a comprehensive review that situates the current research within existing knowledge and supports the development of meaningful research questions.