part 1

• Questionnaires is composed of a written list of item questions wherein the participants can answer independently
• Experiment is designed to test hypotheses under controlled conditions and involves the manipulation of variables.
• Three type of experiments: laboratory, field, and natural.
• Quantitative Observation is a process wherein researchers purposely or selectively watch or listen to an occurring interaction or phenomenon.
• Quantitative Observation is quantified by using rating scales and checklists.