Final answer:
Max Weber, a pioneering German sociologist, developed both the ideal type and the concept of value neutrality to guide sociologists in conducting and presenting research without bias.
Step-by-step explanation:
The conceptual tool known as the 'ideal type' was introduced by pioneering German sociologist Max Weber. This tool serves as a model for evaluating specific cases. Weber is also renowned for introducing the concept of value neutrality, which is the practice of sociologists remaining impartial and without bias during a study and in publishing its results. Value neutrality is critical as it prevents personal values from distorting the interpretation of data, thereby upholding the integrity of sociological research.
In the context of Ethics, Weber's insistence on value neutrality aims to ensure that sociologists disclose findings without omiting or distorting significant data, no matter their personal beliefs or values.