opaqueice;230019 Wrote: > Correct, for a ratio of .055. > Well, in the this case the null hypothesis is that the two sources are > indistinguishable. Now suppose you had scored 0/10. The chances of > that happening if the NH is correct are quite small (1/1024), and > therefore you would probably conclude that you could tell the > difference and were simply mixed up about which was which. Since you'd > also conclude you could tell the difference on a high score, both > possibilities should be taken into account. At least that's the most > conservative approach. > Theoretically you are right but at first I felt an irrational rejection of what you wrote. Then I went to my stereo and listened to some music and it came to me... The tp is actually better why take into account the other tail? Slowly I am getting sceptical about the findings I was so excited to report. I wonder if the rca cable could have accounted for the difference. They where equally cheap. I don't believe in cables as long as the have the same ohmic resistance. But they are not of the same brand or making. > > Single blind means you didn't know what you were hearing, but the > experimenter did. In a DBT neither the subject nor the experimenter > knows (until afterwards). Harder to arrange, but sometimes not much > harder. Hm, yep. We knew after each trial if we where right. But we did not quite know it when listening. OK, how would you arrange a REAL dbt then? Somebody has to select the source.
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