## Overview
This OSF project contains:
- Preregistration documentation
- Task scripts and stimuli
- Data
- Analysis scripts
## Preregistration
This project was pre-registered on OSF prior to commencement of data collection: https://osf.io/fvhxq/register/565fb3678c5e4a66b5582f67
All deviations from the pre-registered protocol will be described in the manuscript for this study.
## Task scripts and stimuli
3 computer based language tasks were used in this study. The Matlab scripts and stimuli used for these tasks can be found under the materials component of this OSF project.
## Data
All (anonymised) data from the project can be found under the data component within this project page.
This data includes:
- Demographic information on sample, **Participant_Demographics.csv**
- Behavioural data on fTCD task performance, **Behavioural data doppler.csv**
- Analysed fTCD data giving laterality indices for each participant, **B1_fTCD_data.xlsx**
- Data from 12 language assessment measures with coding of laterality group (consistent or inconsistent), **B1_data.csv**
- Data from 12 language assessment measures with coding of diagnosis group (developmental disorder or control), **B1_data_diagnosis.csv**
- LI values with coding of diagnosis and laterality groups, **LI data.csv**
- Handedness laterality indices calculated from the Annett peg moving task, **Peg moving LIs.csv**
- Individual trial LIs for each participant on each of the three tasks, **Individual trial LIs PD.csv**, **Individual trial LIs SD.csv**, and **Individual trial LIs SG.csv**
## Analysis scripts
Three analysis scripts are available here:
- The script used to preprocess the raw fTCD data and extract laterality index (LI) values, **B1_doppler_analysis_v4.R**
- An R markdown script containing pre-registered and exploratory analyses as reported on in the manuscript, **B1_master_script.Rmd**
- An R script for the original pre-registered analysis using the Hotelling's T-square test, **hotellings T2 and CIs v3 12 measures.R**
