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Participants

75 students of the University of Potsdam all of whom were native speakers of German with normal or corrected-to-normal vision participated in the experiment. Participants with soft lenses were excluded from participation as soft lenses often pose serious challenges for the calibration of the eye-tracker. They were either students of biology or of physics in either their first semester of the BSc program (undergraduate) or graduate students currently attending a MSc or PhD program (graduate). Participants were requested to not have consumed any alcohol the day of the experiment and to not be suffering from sleep deprivation. Participants received a minium compensation of 10 EUR and up to 20 EUR if they answered a specific number of comprehension questions correctly.

Physics Biology
undergraduate 12 16
Advanced 20 27

Demographic data

The field of studies (including area specialization if applicable), the current semester of studies, gender, age, handedness, whether the participant was wearing contact lenses or glasses, hours of sleep the night before the experiment, alcohol consumption within 24h hours before the experiment, whether or not the participant had grown up bilingually, and the state (Bundesland) where the German language was acquired were recorded. Some of that data is made available in the participant_data.tsv file. Please see the CODEBOOK.md for more information on the available information.

column description value range/choices
reader_id unique reader identifier int 0-105
reader_discipline reader's field of study categorical {pyhsics,biology}
reader_discipline_numeric numeric value of reader domain int biology==0 physics==1
level_of_studies reader's level of studies categorical {undergraduate, graduate}
level_of_studies_numeric numerical value of level_of_studies int undergraduate==0 graduate==1
discipline_level_of_studies reader's domain expertise categorical biology-undergraduate biology-graduate physics-undergraduate physics-graduate
discipline_level_of_studies_numeric numerical value of level_of_studies int biology-undergraduate==0 biology-graduate==1 physics-undergraduate==2 physics-graduate==3
glasses whether reader had glasses categorical {yes,no,nan}
age reader's age float 18-41, nan
handedness reader's handedness categorical {right,left}
hours_sleep reader's number of sleep night before float 0-11
alcohol whether reader consumed alcohol night before experiment categorical {yes, no, nan}
gender reader's gender categorical male,female,nan
gender_numeric numerical value of reader's gender int male==0 female==1