Calorie_Counts {metaggR}

Data: Calorie Counts

Description

Palley and Satopää (2021) conducted an experiment where participants were presented with 36 different pictures of food from different restaurants and were asked to estimate the total number of calories in these dishes. Each response involves three steps:

1. Initial Estimates: On the first screen the participant was presented with a picture of a meal and asked How many calories do you think are in this meal?

2. Predictions of Others: On the second screen the participant saw the same picture, was reminded of their previous estimate, and given the statement: We will be showing this picture to other participants as well. Just as we did with you, we will ask them how many calories they believe are in this meal. The participant was then asked to predict How many calories do you think that others will guess on average?

3. Final Estimates: On the third screen the participant saw the same picture again and was asked After having reflected on others, what is your own final best estimate of the number of calories in this meal?

Usage

E_CALORIES_INITIAL

E_CALORIES_FINAL

P_CALORIES

THETA_CALORIES

ID_CALORIES

Format

E_CALORIES_INITIAL

is a list of the judges' initial estimates of the calorie counts in each of the 36 meals. Specifically, the jth element is a vector of the judges' initial estimates of the calories in the jth meal.

E_CALORIES_FINAL

is a list of the judges' final estimates of the calorie counts in each of the 36 meals. Specifically, the jth element is a vector of the judges' final estimates of the calories in the jth meal.

P_CALORIES

is a list of the judges' predictions of others. Specifically, the jth element is a vector of the judges' predictions of other judges' average estimate of the number of calories in the jth meal.

THETA_CALORIES

is a vector of the true calorie counts in each of the 36 meals. Specifically, the jth element is the true calorie count in the jth meal.

ID_CALORIES

is a list of the judges' identification numbers in each of the 36 meals. Specifically, the jth element is a vector of identification numbers of judges' who gave responses for the jth meal. These values make it possible to track a judge across questions.

Remark.

The elements of each list correspond to the same meal. Specifically, the jth elements of THETA_CALORIES, E_CALORIES_INITIAL, E_CALORIES_FINAL, P_CALORIES, and ID_CALORIES represent the true calories, initial estimates, final estimates, the predictions of others, and identification numbers of the jth meal.

Source

Asa Palley and Ville Satopää. "Boosting the Wisdom of Crowds Within a Single Judgment Problem: Selective Averaging Based on Peer Predictions." https://papers.ssrn.com/sol3/Papers.cfm?abstract_id=3504286