The emergence of different schools of thought in geography, including humanistic, radical, and behavioral geography, occurred in response to discontentment with the quantitative revolution in the field. 

1. Humanistic School of Geography: The humanistic school of geography emerged as a reaction against the perceived limitations of the quantitative revolution, which was seen as reductionist and overly focused on data and statistics. Humanistic geography places a stronger emphasis on the human experience and the subjective aspects of geography, including the cultural, emotional, and phenomenological dimensions.
 

2. Radical Geography: Radical geography emerged as a critique of the quantitative revolution and sought to address issues of social justice, power, and inequality. It focuses on the political and economic forces that shape geographical patterns and inequalities.

3. Regional Geography: The discontentment with the quantitative revolution did lead to the emergence of other approaches in geography, such as the humanistic school of geography, radical geography, and behavioral geography, as scholars sought alternative perspectives and methodologies in response to the limitations and critiques of the quantitative approach. Regional geography, in this context, was not a direct outcome of this discontentment.
 

4. Behavioral Geography: Behavioral geography was another response to the discontentment with the quantitative approach. It emphasizes the study of human behavior in spatial contexts. This approach incorporates psychological and cognitive theories to understand how individuals and groups make decisions and interact with their environment.