Rules of thumb that are derived from experiences and used in decision-making and problem solving because they usually work are __________

Auditory hallucinations in schizophrenia patients may represent__________

a. damage to the auditory nerve b. eruption of the id into conscious awareness c. seizure-like activity in the brain d. a type of inner speech

Galileo made significant improvements to the sector. This instrument evolved into others such as the ____

a. single-lens microscope c. abacus b. compound microscope d. slide rule