This sub-class includes: •conducting market research and/or analysis studies on market potential, acceptance of products, buying habits of consumers awareness, evaluation and/or use of goods and services, on product development and/or pricing, on the use of media and/or on the recall and/or impact of advertising for the promotion and/or development of products and/or services •conducting studies of opinion research or polls on political, economic and/or social issues such as the quality of life and/or lifestyles, on social participation and/or political participation, on party preference and/or voting behavior •scientific conducting of market and/or opinion research: - qualitative and/or quantitative methodological orientation - reactive and/or non-reactive survey procedures - collection of research data through questioning, observation, measurement and/or counting -face-to-face, postal, telephone and/or online interviews to collect research data