This dataset, caffeine_matrix, is a matrix containing data from Henson et al. [1996] investigating caffeine's effect on short-term visual memory. High school students (9 eighth-graders, 10 tenth-graders, 9 twelfth-graders) were tested twice: once after drinking caffeinated Coke and once after decaffeinated Coke. Students had 10 seconds to memorize 20 common objects, then 1 minute to recall them. The study examined whether students remembered more objects with decaffeinated versus caffeinated Coke.
Usage
data(caffeine_matrix)Format
A numeric matrix with 28 rows and 3 columns:
- Grade
Numeric values indicating the grade level of the student (8, 10, or 12)
- Without
Number of objects remembered after drinking decaffeinated Coke
- With
Number of objects remembered after drinking caffeinated Coke
Details
The dataset name has been kept as 'caffeine_matrix' to avoid confusion with other datasets in the R ecosystem. This naming convention helps distinguish this dataset as part of the MedxR package and assists users in identifying its specific characteristics. The suffix 'matrix' indicates that the dataset is stored as a matrix object. The original content has not been modified in any way.