Beldeko Summary Corpus v1.0.0 The Beldeko (Belgisches Deutschkorpus) Summary Corpus is a learner corpus that consists of summaries written by advanced L2 German learners (CEF level B2-C1) with L1 Dutch. It has been created with the aim of investigating the academic writing skills in L2 German of third-year students of two bachelor programmes in Applied Linguistics and Linguistics and Literature, respectively. The corpus consists of 301 summaries (70774 tokens) written by 115 students of three intact classes (convenience sampling). The texts were collected at Ghent University (in 2013 and in 2014) and University College of Ghent (in 2013) as pre- and posttests of an intervention study on collaborative writing carried out by Carola Strobl in the context of her PhD research (Strobl, C. (2015). Affordances of online technologies for academic writing instruction in a foreign language. Ghent University, unpublished doctoral dissertation). 82 students produced three summaries each (pretest, posttest immediately after the three-weeks-intervention, delayed posttest six weeks after the intervention; missing data are indicated as n.a. in the metadata file) and 33 students produced two summaries each (pretest and posttest, missing data are indicated as n.a. in the metadata file). The metadata file (Beldeko_Summary_1.0.0_metadata.xlsx) provides information about: • Institution of data collection (HG= University College of Ghent, UG= Ghent University) • Year of data collection (2013, 2014) • Participants´ gender (f, m) • Number of texts written and number of tokens in each text (T1, T2, T3) The individual file names of the corpus reveal institution, year, unique ID of participant (per institution per year), text number, in the given order. The summaries contain between 37-330 words each, with a mean of 230 words (the targeted word count was between 220-250 words). Outliers regarding text length were unfinished texts produced by students who struggled with the time restriction of 60 minutes. The texts were written in class, on ...