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| Titel: |
Viewers' responses to delays in simulated teletext reception |
| Auteur: |
Treurniet, William C. Hearty, Paul J. Planas, Miguel A. |
| Verschenen in: |
Behaviour & information technology |
| Paginering: | Jaargang 4 (1985) nr. 3 pagina's 177-188 |
| Jaar: |
1985-07-01 |
| Inhoud: |
In a teletext service, information is retrieved from a sequence of pages broadcast cyclically on a video channel and the mean and variance of system response times are directly related to the number of pages in the cycle. Two experiments were conducted to investigate the maximum tolerable range of such delays. Three degrees of negative viewer response were defined by progressively more conservative criteria for annoyance. Results showed that both the proportion of delays noticed and the proportion of negative viewer responses at each criterion increased linearly with the square root of the system response time. As an example of the effect of criterion, 50 per cent of observers were slightly annoyed or worse with a mean response time of approximately 13s, while 20 per cent were moderately annoyed or worse with the same delay. In limiting the duration of the broadcast cycle, teletext service providers apparently should consider what proportion of viewers to annoy and to what degree. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 9 van 9 gevonden artikelen
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