补:实验心理学 Flashcards

1
Q

辨别力指数、反应偏向

A

▪️辨别力指数 𝑑‘
噪音分布(N 分布)与信号加噪音分布(SN分布)的距离,等于N分布和 SN分布的均数之差除以 N分布的标准差。
🔺 𝑑‘= Z 击中 -Z 虚报
𝑑‘越大,表示敏感性越高; 𝑑’越小,表示敏感性越低。

▪️反应偏向
似然比β:区分信号与噪音反应的心理感受水平 Xc所对应的信号分布纵轴与噪音分布纵轴之比。
🔺 β= O 击中 /O虚报

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2
Q

虚报率

A

y/N,虚报率=虚报次数/噪声总次数

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3
Q

击中率

A

y/SN,击中率=击中次数/信号总次数

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4
Q

漏报率

A

n/SN,漏报率=漏报次数/信号总次数

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5
Q

正确拒绝率

A

n/N,正确拒绝率=正确拒绝次数/噪声总次数

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