| #### Column names for Sentence measures | |
| Some features were adapted from the popEye R package ([github](https://github.com/sascha2schroeder/popEye)) | |
| The if the column depend on a line assignment then a _ALGORITHM_NAME will be at the end of the name. | |
| - subject: Participant ID | |
| - trial_id: Position of trial in analysis | |
| - item: Item ID | |
| - condition: Condition (if applicable) | |
| - sentence_number: Number of sentence in trial | |
| - sentence: Sentence Text | |
| - number_of_words: Number of words in sentence | |
| - skip: Whether the sentence has been skipped | |
| - nrun: Number of times the sentence has been read | |
| - reread: Whether the sentence has been read more than one time | |
| - reg_in: Whether a regression has been made into the sentence | |
| - reg_out: Whether a regression has been made out of the sentence | |
| - total_n_fixations: Number of fixations made on the sentence | |
| - total_dur: Total sentence reading time | |
| - rate: Reading rate (number of words per minute) | |
| - gopast: Sum of all fixations durations from the time the sentence was entered until it was left to the right (regression path duration) | |
| - gopast_sel: Sum of all fixations on the sentence from the time it was entered until it was left to the right (selective go-past time: regression path dur ation minus the time of the regression path) | |
| - firstrun_skip: Whether sentence has been skipped during first-pass reading | |
| - firstrun_reg_in: Whether a regression has been made into the sentence during first-pass reading | |
| - firstrun_reg_out: Whether a regression has been made out of the sentence during first-pass reading | |
| - firstpass_n_fixations: Number of fixation made during first-pass reading | |
| - firstpass_dur: First-pass reading time | |
| - firstpass_forward_n_fixations: Number of first-pass forward fixations (landing on one of the upcoming words of a sentence) | |
| - firstpass_forward_dur: Duration of forward fixations during first-pass reading | |
| - firstpass_reread_n_fixations: Number of first-pass rereading fixations (landing one of the words of the sentence that have been read previously) | |
| - firstpass_reread_dur: Duration of rereading fixations during first-pass reading | |
| - lookback_n_fixations: Number of fixations made on the sentence after regressing into it from another sentence | |
| - lookback_dur: Duration of lookback fixations on the sentence | |
| - lookfrom_n_fixations: Number of rereading fixations on another sentence initiated from the sentence | |
| - lookfrom_dur: Duration of lookfrom fixations on the sentence | |
| The forward, rereading, look-back, and look-from measures are computed in similar way as in the SR "Getting Reading Measures" tool (https://www.sr-support.com/thread-350.html) which is based on the Eyelink Analysojia software (developed by the Turku Eye Labs). | |