Question: Extract question data from .asc files

View source: R/Question.R

QuestionR Documentation

Extract question data from .asc files


This function reads in data from question trials and calculates accuracy, response time, etc.


Question(data_list = NULL, maxtrial = 9999,
  Correct_Answ_Flag = "QUESTION_ANSWER",
  Answ_Button_Flag = "ENDBUTTON", summary = TRUE)



Input of data files to be processed. This can be specified in three ways: 1) a directory that contains all the files (it will select all files ending with ".asc", and order them by participant number, if present). 2) Directory to a txt file that contains all the .asc data file names inside: e.g., data_list= "C:/My Data/data_list.txt". In the .txt file, the directory for each .asc data file should appear on a separate row, e.g.: C:/My Data/subject1.asc /n C:/My Data/subject2.asc 3) A directory to a single .asc file: e.g., data_list= "C:/My Data/subject1.asc".


Maximum number of trials in the experiment (default= 9999)


Name of the message flag in the data which indicates what the correct answer was (default= "QUESTION_ANSWER"; Umass convention)


Name of the message flag in the data which indicates the answer button press (default= "ENDBUTTON"; Umass convention)


a logical indicating whether to print average accuracy per subject (default= TRUE)


Martin R. Vasilev

martin-vasilev/EMreading documentation built on Jan. 31, 2023, 3:23 p.m.