Final answer:
The early stages of development in the field of consumer behaviour consisted of significant changes, such as the shift from masculine to feminine shopping spaces and the influence of behavioral economics.
Step-by-step explanation:
The field of consumer behaviour, in its early stages of development, underwent significant changes. One important transformation was the shift from a masculine venture and community event to an individual task usually performed by married women on behalf of their families. Another significant change was the emergence of urban shopping districts as feminized spaces. Lastly, the field of consumer behaviour has been influenced by the rise of behavioral economics, which challenges the assumption of traditional economic theory and combines economics with psychology.