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1) Hearing loss (to categorize- Present simple) by its severity and by the age of onset.
2) The severity of hearing loss (to measure - Present Simple) by the degree of loudness.
3) Hearing loss (to rank - Present Simple) as mild, moderate, severe or profound.
4) Measuring hearing loss in terms of a percentage (to compare - Present Simple) to measuring weight in inches.
5) The quietest sounds you could hear at different frequencies (to plot - Past Simple) on an audiogram to reflect your ability to hear at different frequencies.
6) A special technology (to develop - Present Perfect) by the Ear Institute, and (to intend - Future Simple) to measure an ability to understand speech in quiet and noisy environments.
7) Unlike pure-tone tests, where only ear (to test - Present Simple) at a time, this technology evaluates hearing using both ears simultaneously.
8) The eyes (to regard - Present Simple) as the most important nonverbal message system.
9) Decibels of loss (to convert -Future Simple) via a recog nized legal formula.
10) It (to find -Present Perfect) that listeners gaze at speakers more than speakers gaze at listeners.
11) Hearing loss (to tie - Present Simple) to their inability to pick up auditory social cues.
12) The words "suggest" and "suggestion" (to use - Past Simple) in senses very close to those which they have in common speech.
13) Hearing dogs, a category of assistance dogs, (to train - Present Simple) to help those with hearing impairments.
14) Experiments on suggestion, in the absence of hypnosis, (to conduct - Past Simple) by early researchers.