Where do hypotheses come from: ____________________, ____________________, _____________________ Match the type of research to the question it answers: Types of descriptive research: case study : What changed about him after the accident: limits to case studies, _______________________________, _______________________________, observational research : : _________________________________________: two types, _________________: observe without participating, _________________: participate in the observation, limits to observational method, _________________________________, _________________________________, survey research. Strength: _______________________________________: limits to survey research, ____________________________, random sampling: ____________________________, ____________________________, _____________________________ Fill in the chart with the key terms: Iv everyone has an equal chance of being a participant. Define the three measures of central tendency: mode, mean, median: Match the structures with its function: dendrite. _____ space between the axon of one cell and the dendrite of another: cell body. _____ out box ; sends signals to other neurons & effector cells: axon. _____ stores and releases neurotransmitters: myelin sheath. _____ locations on dendrites, where nts bind: synapse.