(9) Explain “preadjustment of attention.”
(10) What is the most common error with the untrained observer? Explain and illustrate.
(11) Explain the expression “all-angled observer.”
(12) State and exemplify the errors of observation and experiment.
(13) To what error in observation are superstitions generally due?
(14) Define and illustrate hypothesis.
(15) Indicate the difference between an hypothesis and an ordinary induction.
(16) When may theory and hypothesis be used interchangeably? Illustrate.
(17) Show by illustration that the term theory is ambiguous.
(18) Summarize the requirements of a permissible hypothesis. Illustrate.