stimuli of pictures with a random prob sequence

[cynthiayu316]

Hello! Could you explain a little more about what you are trying to achieve? In your design, when a participant clicks on the image that has 80% probability assigned to it, there's an 80% chance the next trial will tell them they got a reward and a 20% chance the next trial will tell them they didn't get a reward?

Hi,  thank you for your reply.  It means that we have two rounds of games for each participant while each round contains 100 trials. Then inside the 100 trials, we will have a fixed probability for three stimuli(three pictures) such as for the left it is 80% for the 100 trials, the middle is 50%, and the right is 20%, etc. And the next round(next 100 trials), the left will be maybe 50%, the middle would be 20%, the right would be 80%. The fixed probability will be designed at the beginning of the experiment. what I need is more like the random sequence assign to the stimuli. When choosing an 80 % percent reward it means that they will have a bigger chance to get a reward than other stimuli, but still 20% a chance they will get nothing. Then they will receive the response of stimuli(images such as tick and cross) to indicate whether they get the reward. Thank you!

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Hello! Could you explain a little more about what you are trying to achieve? In your design, when a participant clicks on the image that has 80% probability assigned to it, there's an 80% chance the next trial will tell them they got a reward and a 20% chance the next trial will tell them they didn't get a reward?

Hi,  thank you for your reply.  It means that we have two rounds of games for each participant while each round contains 100 trials. Then inside the 100 trials, we will have a fixed probability for three stimuli(three pictures) such as for the left it is 80% for the 100 trials, the middle is 50%, and the right is 20%, etc. And the next round(next 100 trials), the left will be maybe 50%, the middle would be 20%, the right would be 80%. The fixed probability will be designed at the beginning of the experiment. what I need is more like the random sequence assign to the stimuli. When choosing an 80 % percent reward it means that they will have a bigger chance to get a reward than other stimuli, but still 20% a chance they will get nothing. Then they will receive the response of stimuli(images such as tick and cross) to indicate whether they get the reward. Thank you!