Causal research must be designed in such a way that the evidence regarding causality is clear. The main sources of data for causal research are interrogating respondents through surveys and conducting experiments
Experimentation involves establishing a controlled experiment or model that simulates the real-world marketing situation being investigated.
In the observation method, the primary data result from observing the respondents doing something
how are rival causal factors controlled in research design
it doc
You research something casual like sports.
Answering your question fully will entail further research on my part.
nothing at all
experimental
Hubert M. Blalock has written: 'Theory construction' 'Causal inferences in nonexperimental research' 'Causal inference in nonexperimental research'
refer to the satisfying the needs of different people and organisation.
Marketing Research is broad whilst Market Research is narrow. Marketing Research is universal set whilst Market Research is the subset of the marketing research.
limitation of marketing research