Read Me The file “Experimental data” is a database of 7,260 responses experimentally collected from 121 native speakers of Contemporary Standard Russian. In what follows we explain the tags employed in the database. Column A “Gender” provides information about gender. Overall, in our sample of speakers there are 47 males and 74 females. Column B “Age” indicates the speakers’ age, which ranges from 14 to 62 years. Column C “AgeGroup” specifies what age group the speaker belongs to: is he or she a child or an adult? In our experiment we recruited 70 children and 51 adults. Column D “Education” provides information about level of education: school (applicable for all children), completed college education and completed higher education for adults. Column E “City” indicates the city where a subject comes from and currently lives. All school-age participants live and attend school in the Russian city of Iževsk. Adult participants are residents of a large variety of Russian cities including Moscow, Saint Petersburg, Iževsk, Samara, Nižnij Novgorod, Perm’, Ufa, Tver’, Smolensk, Kandalakša, Belgorod, and Blagoveščensk. Column F “Country” indicates the country where a subject grew up and currently resides. In this study we focus on 121 subjects who live in Russia and exclude the responses of participants who live outside Russia. Column G “Subject” provides a code individually assigned to each subject. This tag accompanies each response in order to distinguish between responses of the same subject and responses of different subjects. Column H “Score” lists an acceptability score provided by a subject. The values are listed as categorical values “five”, “four”, “three”, “two”, and “one”. The highest score of five points is assigned to a perfectly normal Russian word, the lowest core of one point is assigned to a word that does not exist in Russian. The ratings correspond to the Likert-type scale employed in our experiment: □ 5 points – Èto soveršenno normal’noe slovo russkogo jazyka. ‘This is an absolutely normal Russian word.’ □ 4 points – Èto slovo normal’noe, no ego malo ispol’zujut. ‘This word is normal, but it is rarely used.’ □ 3 points – Èto slovo zvučit stranno, no, možet byt’, ego kto-to ispol’zuet. ‘This word sounds strange, but someone might use it.’ □ 2 points – Èto slovo zvučit stranno, i ego vrjad li kto-to ispol’zuet. ‘This word sounds strange and it is unlikely that anyone uses it.’ □ 1 point – Ètogo slova v russkom jazyke net. ‘This word does not exist in the Russian language.’ Column I “GivenScore” lists the same acceptability scores but as numerical values: numbers from 5 to 1. Column J “Stimulus” indicates the change-of-state verb evaluated with a given acceptability score. Column K “Prefix” specifies whether the stimulus verb is prefixed with O- or U-. Column L “WordType” informs whether the stimulus verb is a standard, marginal, or nonce verb. Column M “Frequency” provides an exact number of attestations of a stimulus verb in the Modern Subcorpus of the Russian National Corpus (www.ruscorpora.ru). Column N “Context” provides a sentence from the corpus that contains a stimulus verb and was used in the experiment. Note that this column contains punctuation signs and is omitted from the database used as input for statistical analyses.