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C Jensema

Publications and source records attributed to C Jensema.

10 recordsLinked to original sources

Viewer reaction to different television captioning speeds.

Video segments captioned at different speeds were shown to a group of 578 people that included deaf, hard of hearing, and hearing viewers. Participants used a five-point scale to assess each segment's caption speed. The "OK" speed, defined as the rate at which "caption speed is comfortable to me," was found to be about 145 words per minute (WPM), very close to the 141 WPM mean rate actually found in television programs (Jensema, McCann, & Ramsey, 1996). Participants adapted well to increasing caption speeds. Most apparently had little trouble with the captions until the rate was at least 170 WPM. Hearing people wanted slightly slower captions. However, this apparently related to how often they watched captioned television. Frequent viewers were comfortable with faster captions. Age and sex were not related to caption speed preference; nor was education, with the exception that people who had attended graduate school showed evidence that they might prefer slightly faster captions.

Adolescent↗

Closed-captioned television presentation speed and vocabulary.

This study summarizes an extensive research project on closed-captioned television. Caption data were recorded from 205 television programs. Both roll-up and pop-on captions were analyzed. In the first part of the study, captions were edited to remove commercials and then processed by computer to get caption speed data. Caption rates among program types varied considerably. The average caption speed for all programs was 141 words per minute, with program extremes of 74 and 231 words per minute. The second part of the study determined the amount of editing being done to program scripts. Ten-minute segments from two different shows in each of 13 program categories were analyzed by comparing the caption script to the program audio. The percentage of script edited out ranged from 0% (in instances of verbatim captioning) to 19%. In the third part of the study, commonly used words in captioning and their frequency of appearance were analyzed. All words from all the programs in the study were combined into one large computer file. This file, which contained 834,726 words, was sorted and found to contain 16,102 unique words.

Humans↗

Children in educational programs for the hearing impaired whose impairment was caused by mumps.

Mumps was reported to be a cause of hearing loss in 259 persons from a sample of 43,946 students enrolled in special educational programs for the hearing impaired. Males and young children appear to be more prone to deafening by mumps, and there may be a relationship between age of onset and degree of hearing loss. Overall, those deafened by mumps appear to have characteristics quite different from those of children deafened by other causes.

Adolescent↗