___________________________________________________________________________________________________________________ CHILDREN'S TEST OF NONWORD REPETITION (CNRep) ___________________________________________________________________________________________________________________ Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC Date: 01-07-2012 last updated: 01-19-2023 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC Script Copyright © 01-19-2023 Millisecond Software ___________________________________________________________________________________________________________________ BACKGROUND INFO ___________________________________________________________________________________________________________________ This script implements the Children's Test of Nonword Repetition (CNRep) to measure phonological working memory as used by: Anderson, J.D, Wagovich, S.A., & Hall, N.E. (2006). Nonword repetition skills in young children who do and do not stutter. J Fluency Disord, 31(3), 177–199. The test was originally described in: Gathercole, S.E., Willis, C.S., Baddeley, A.D., & Emslie, H. (1994). The Children’s test of nonword repetition: A test of phonological working memory. Memory; 2:103–127. The described test (Anderson et al, 2006) uses a tape-recorded (randomly assembled) sequence of nonwords with each word being separated by a 4s time interval. If a child needed more time to respond, the tape was paused (Anderson et al, 2006). This script adapts this procedure to the computer with the following procedural differences: - unlimited time to respond to each nonword (the response latency is measured). - As any utterance at the point of recording is taken as a response the experimenter has to accept the response by pressing the <SPACEBAR> to advance to the next nonword trial. By pressing <ENTER>, the experimenter has the option to repeat the previous trial. ___________________________________________________________________________________________________________________ TASK DESCRIPTION ___________________________________________________________________________________________________________________ Participants hear made-up English words and have to repeat them out loud. Trials can be repeated if deemed necessary by experimenter. A practice run presents made-up and real English words. ___________________________________________________________________________________________________________________ DURATION ___________________________________________________________________________________________________________________ the default set-up of the script takes appr. 7 minutes to complete ___________________________________________________________________________________________________________________ DATA FILE INFORMATION ___________________________________________________________________________________________________________________ The default data stored in the data files are: (1) Raw data file: 'cnrep_raw*.iqdat' (a separate file for each participant) build: The specific Inquisit version used (the 'build') that was run computer.platform: the platform the script was run on (win/mac/ios/android) date, time: date and time script was run subject, group: with the current subject/groupnumber session: with the current session id blockcode, blocknum: the name and number of the current block (built-in Inquisit variable) trialcode, trialnum: the name and number of the currently recorded trial (built-in Inquisit variable) Note: trialnum is a built-in Inquisit variable; it counts all trials run; even those that do not store data to the data file such as feedback trials. Thus, trialnum may not reflect the number of main trials run per block. stimulusitem: the presented stimuli in order of trial presentation stimulusindex: helper variable that stores the index of the current stimulus response: the participant's response latency: the response latency (in ms) rt: combines reaction time (in ms) across trials that repeat a nonword (2) Summary data file: 'cnrep_summary*.iqdat' (a separate file for each participant) inquisit.version: Inquisit version run computer.platform: the platform the script was run on (win/mac/ios/android) startDate: date script was run startTime: time script was started subjectid: assigned subject id number groupid: assigned group id number sessionid: assigned session id number elapsedTime: time it took to run script (in ms); measured from onset to offset of script completed: 0 = script was not completed (prematurely aborted); 1 = script was completed (all conditions run) ___________________________________________________________________________________________________________________ EXPERIMENTAL SET-UP ___________________________________________________________________________________________________________________ * 1 Instruction Block * 1 Practice Block * 1 Experimental Block EXPERIMENTAL BLOCK: * 1 block a 40 trial sequences EXPERIMENTAL TRIAL SEQUENCE: trial.cnrep_nonwords -> trial.accept -> a) Spacebar: next trialsequence (new nonword) b) Enter: trial.repeatnonword -> trial.accept-> a) Spacebar: next trialsequence (new nonword) b) trial.repeatnonword *trial.cnrep_nonwords: the next nonword is chosen. Any utterance is recorded as the response * latency is recorded. * by default items are called in sequence (-> Gathercole et al., 1994), this can be changed under STIMULI-> sound.nonword *Experimenter has control over whether to accept the current response or whether to repeat the trial ___________________________________________________________________________________________________________________ STIMULI ___________________________________________________________________________________________________________________ * 40 nonwords, 10 items each with 2, 3, 4 and 5 syllables List of nonwords from the CNRep (Gathercole et al., 1994) Item Number Nonword (syllables in parentheses), 1 Diller (2) 2 Skiticult (3) 3 Empliforvent (4) 4 Ballop (2) 5 Sepretennial (5) 6 Commeecitate (4) 7 Brasterer (3) 8 Versatrationist (5) 9 Woogalamic (4) 10 Glistow (2) 11 Pennerriful (4) 12 Sladding (2) 13 Detratapillic (5) 14 Glistering (3) 15 Thickery (3) 16 Pristoractional (5) 17 Fenneriser (4) 18 Bannow (2) 19 Altupatory (5) 20 Stopograttic (4) 21 Defermication (5) 22 Commerine (3) 23 Pennel (2) 24 Blonterstaping (4) 25 Confrantually (5) 26 Prindle (2) 27 Bannifer (3) 28 Reutterpation (5) 29 Barrazon (3) 30 Hampent (2) 31 Trumpetine (3) 32 Voltularity (5) 33 Perplisteronk (4) 34 Tafflest (2) 35 Loddenapish (4) 36 Doppelate (3) 37 Underbrantuand (5) 38 Contramponist (4) 39 Frescovent (3) 40 Rubid (2) * sound files recorded by a male American English native speaker (NOT original); !!!IMPORTANT: the sound files provided with this script are only intended for DEMONSTRATION PURPOSES and we STRONGLY suggest using your own sound recordings. * sound files can easily be exchanged under EDITABLE CODE -> Editable STIMULI-> item.nonwords (as well as practice items: EDITABLE CODE -> Editable STIMULI-> item.practiceitems) PRACTICE: * 1 Block with 10 trial sequences * 5 words and 5 nonwords (NOT original) make up the practice items * practice stimuli are drawn in sequence (->fixed randomly assembled sequence) * Practice trial sequence similar to experimental trial sequence ___________________________________________________________________________________________________________________ INSTRUCTIONS ___________________________________________________________________________________________________________________ * instructions are not original * they can be easily edited under EDITABLE CODE -> Editable INSTRUCTIONS ___________________________________________________________________________________________________________________ EDITABLE CODE ___________________________________________________________________________________________________________________ check below for (relatively) easily editable parameters, stimuli, instructions etc. Keep in mind that you can use this script as a template and therefore always "mess" with the entire code to further customize your experiment.