The stimuli texts are 12 German texts from undergraduate-level biology and physics textbooks (six each). All texts were edited to be approximately 150 words long (min 126, max: 180, mean: 158). Minor adjustments were made if necessary as mathematical formulas, tables and figures were deleted.
For each text, three text comprehension questions and three background questions were created. The text comprehension questions required a thorough understanding of the text, but did not require any additional background knowledge. The background questions, in contrast, tested the general knowledge in the topic presented in the text and hence required background knowledge.
Refer to the CODEBOOK for more information.
The sources for the stimuli texts are found in the stimuli.bib file and below.
| Topic | Text ID | Source |
|---|---|---|
| Biology Texts | b0 | Ableitner, O. (2014). Einführung in die Molekularbiologie. Basiswissen für das Arbeiten im Labor. Wiesbaden: Springer. |
| b1 | Graw, J. (2015). Genetik (6th ed.). Berlin: Springer. | |
| b3 | Townsend, C.R., Begon, M., Harper, J.L. (2003). Ökologie (J. Steidle, F. Thomas, B. Stadler, U. Hoffmeister, & T. Hoffmeister, Trans.). Berlin: Springer. | |
| b3, b4, b5 | Boujard, D., Anselme, B., Cullin, C., Raguénès-Nicol, C. (2014). Zell- und Molekularbiologie im Überblick (S. Lechowski, Trans.). Berlin: Springer. | |
| Physics Texts | p0, p3 | Demtröder, W. (2014). Experimentalphysik 4: Kern-, Teilchen- und Astrophysik (4th ed.). Berlin: Springer. |
| p2, p4 | Demtröder, W. (2009). Experimentalphysik 2: Elektrizität und optik (5th ed.). Berlin: Springer. | |
| p1, p5 | Demtröder, W. (2010). Experimentalphysik 3: Atome, Moleküle und Festkörper (4th ed.). Berlin: Springer. |
Participants received different versions of the stimuli. Version numbers are specified in the data files. Item versions differ:
- in the order of the texts
- in the order of the answer options of each question
Questions are always ordered the same with text questions coming first and background questions coming second.
All different items are specified in the items.csv file.
Refer to the CODEBOOK for more information.
For each of the 12 stimuli texts there is an .ias file that contains the areas-of-interest (AOI). AOIs are specified as character indices in the text and are defined as a rectangle around each character. Those files have been automatically created by the SR Research Data Viewer Software.
Interest areas for questions are deleted.
Quotes symbols are replaced by * (for csv reader to open without regexp problems).
No other changes were made to these files.
Refer to the CODEBOOK for more information.
Word level aoi files for all stimulus files can be created via python generate_word_aois.py. The generated files can be found in word_aoi_texts.
Please see the ANNOTATION.md file for more information on the word features and how they were created.
Refer to the CODEBOOK and the ANNOTATION file for more information.
All participants received the same practice text before the real experiment started. The practice texts are contained in the practice items file.