"What are the differences among the research approaches (and thinking styles) that guide the predominant kinds of studies done in operations research, marketing, finance, and/or organizational behavior?"

To understand the differences among the research approaches and thinking styles in operations research, marketing, finance, and organizational behavior, you need to explore the characteristics of each discipline separately.

1. Operations Research (OR):
Operations Research applies mathematical methods to solve complex problems related to decision-making and optimization. The research approaches in OR typically involve quantitative data analysis, modeling, and optimization techniques. The thinking style in OR typically emphasizes logical reasoning, mathematical modeling, and problem-solving skills.

2. Marketing:
In marketing research, the main focus is on understanding consumer behavior, market trends, and developing effective marketing strategies. Research approaches in marketing can be both qualitative and quantitative. Quantitative approaches involve collecting and analyzing numerical data, while qualitative approaches involve gathering insights from interviews, focus groups, and observations. The thinking style in marketing research often involves creativity, empathy, and understanding consumer psychology.

3. Finance:
Finance research focuses on understanding financial markets, investment strategies, and financial decision-making. Research approaches in finance often involve quantitative methods and statistical analysis to analyze financial data and evaluate investment opportunities. The thinking style in finance research typically involves a strong understanding of finance theories, mathematical modeling, and analytical thinking.

4. Organizational Behavior:
Organizational Behavior research examines the behavior of individuals and groups within organizations, aiming to understand and improve various aspects such as leadership, teamwork, and employee satisfaction. Research approaches in organizational behavior can be both qualitative and quantitative. Qualitative approaches involve interviews, case studies, and observations to understand individual and group behavior. Quantitative approaches involve surveys and statistical analysis to measure and analyze organizational phenomena. The thinking style in organizational behavior research emphasizes understanding human behavior, social dynamics, and applying psychological theories to organizational settings.

To gain a deeper understanding of the differences among these research approaches and thinking styles, you can explore scholarly articles, textbooks, or research journals specific to each discipline. These resources will provide detailed insights into the methodologies and theories used in each field and help you comprehend their unique characteristics.