https://data.mrc.ox.ac.uk/data-set/effects-hunger-experiential-and-explicit-risk-taking The effects of hunger on experiential and explicit risk-taking van Swieten MMHManohar SGBogacz R In this study, healthy participants were tested on the effects of hunger on risk preferences in two complementary tasks. In the experience-based task, participants learned the outcomes of options through sampling, whereas in the description-based task, the outcome probabilities and reward magnitudes were explicitly presented on the screen. The choices were further categorised into three different decision contexts: positive, negative or mixed decision context. Positive decision contexts concern choices between two options with equal expected value, but different level of risk, with outcomes above the average reward. Negative decision contexts concern choices between two options with equal expected value, but different level of risk, below the average reward. Mixed contexts concern choices between two options with different expected values. Study details (excel file) contains the following fields: Subject: number of participant Session 1: hunger (1) or sated (2) Session 2: hunger (1) or sated (2) Age: age of participant Gender: male (1) or female (2) Height: height in m Weight: weights in kg Highest level of education BMI: BMI of participant in kg/m2 Data Described Risk (excel file) contains the following fields: Subject: Number of participant Condition: Hunger (1) or Sated (2) Block: Block number 1-4 Decision Type: Indicates the choice corresponding to Fig3B: Type 1-8: mixed context, type 9: negative context, type 10: positive context Response: Left (1) or right (2) RT: reaction time in ms Reward: win (1) or loss (0) Total Score: Running total number of points Stim order: [1,2] or [2,1] indicates whether the safe (1) or risky (2) stimulus was presented on the left or right. Risky chosen: Risky (1) or alternative (0) chosen High Mean Chosen: High mean (1) or low mean (0) chosen in mixed contexts Data Experienced Risk (excel file) contains the following fields: Stimulus identities: 1 = High mean, Low variance 2 = High mean, High variance 3 = Low mean, Low variance 4 = Low mean, High variance Sheet 1: Choices Subject: Number of participant Condition: Hunger (1) or Sated (2) Block: Block number 1-4 Trial Type: Indicates the type of choice: Type 1-4 are sampling trials, type 5: positive context, type 6-9: mixed context, type 10: negative context Context: Type of context based on trial type: positive (1), negative (2), mixed (3) and forced trials (4) Stim 1 Identity of stimulus 1 Stim 2 Identity of stimulus 2 Response: Left (1) or Right (2) Chosen Stim Identity of the chosen stimulus Reward Points Total number of points RT Reaction time in ms RiskyChosen Risky (1) or low risk (0) option chosen HighMeanChosen High mean (1) or Low mean (0) option chosen in mixed contexts Sheet 2: Rating Subject: Number of participant Condition: Hunger (1) or Sated (2) Block: Block number 1-4 Stim 1 cursor 1: Rating cursor 1 for stim identity 1 Stim 2 cursor 1: Rating cursor 1 for stim identity 2 Stim 3 cursor 1: Rating cursor 1 for stim identity 3 Stim 4 cursor 1: Rating cursor 1 for stim identity 4 Stim 1 cursor 2: Rating cursor 2 for stim identity 1 Stim 2 cursor 2: Rating cursor 2 for stim identity 2 Stim 3 cursor 2: Rating cursor 2 for stim identity 3 Stim 4 cursor 2: Rating cursor 2 for stim identity 4 Mean stim 1: Average value of the two ratings for stim identity 1 Mean stim 2: Average value of the two ratings for stim identity 2 Mean stim 3: Average value of the two ratings for stim identity 3 Mean stim 4: Average value of the two ratings for stim identity 4 Spread stim 1: Spread (difference between two ratings) for stim identity 1 Spread stim 2: Spread (difference between two ratings) for stim identity 2 Spread stim 3: Spread (difference between two ratings) for stim identity 3 Spread stim 4: Spread (difference between two ratings) for stim identity 4 Sheet 3: Parameters Gaussian Subject: Number of participant Condition: Hunger (1) or Sated (2) b: Gaussian distributed softmax parameter a_Q: Gaussian distributed learning rate parameter for mean values a_S: Gaussian distributed learning rate parameter for spread values g0: Gaussian distributed Risk Propensity parameter g1: Gaussian distributed Sensitivity to context effects parameter Sheet 4: Parameters transformed Subject: Number of participant Condition: Hunger (1) or Sated (2) beta: Transformed softmax parameter alpha_Q: Transformed learning rate parameter for mean values alpha_S: Transformed learning rate parameter for spread values gamma0: Transformed Risk Propensity parameter gamma1: Transformed Sensitivity to context effects parameter