TASK AND SIZE EFFECTS IN THE OPPEL-KUNDT AND IRRADIATION ILLUSIONS
TASK AND SIZE EFFECTS IN THE OPPEL-KUNDT AND IRRADIATION ILLUSIONS
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DOI：
10.1080/00221309.1984.9921112
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发表时间：
1984-01-01
影响因子：
2.5
通讯作者：
MURTAGH, MP
中科院分区：
文献类型：
--
作者：
LONG, GM;MURTAGH, MP
研究了任务类型和刺激大小对两种广为人知的知觉大小错觉：Oppel-Kundt错觉和辐射错觉的影响。在实验1中，采用强迫选择任务，由87名男性和女性大学观察者在两个并排的刺激中选择较长的一个，以确定不同长度的刺激的相对感知大小，这些刺激都是白色的，都是黑色或白色的，带有不同数量的黑色条纹。在实验2中，73名男性和女性大学观察者报告了他们对单个目标S长度的直接估计，这一绝对判断任务被用于相同的测定。对于两种知觉判断，奥佩尔-昆特错觉都很明显(P<；0.001)，但错觉的大小并不随刺激的大小成比例增加。只有在实验1的强迫选择判断中才能发现辐射错觉。我们注意到这些错觉对非实验室环境的普遍性。
The effects of type of task and stimulus size on 2 well-known illusions of perceived size were studied: the Oppel-Kundt illusion and the Irradiation illusion. In experiment 1, a forced-choice task, in which 87 male and female college observers chose the longer of 2 side-by-side stimuli, was used to determine the relative perceived size of stimuli of different length that were all white, all black or white with various numbers of black stripes. In experiment 2, an absolute judgment task, in which 73 male and female college observers reported their direct estimate of a single target''s length, was used for the same determinations. For both kinds of perceptural judgment, the Oppel-Kundt illusion is strongly in evidence (P < 0.001), but the magnitude of the illusion does not increase proportionally with the size of the stimuli. The Irradiation illusion is only found with the forced-choice judgments in experiment 1. Implications for the generalizability of these illusions to nonlaboratory settings are noted.