This document provides information on a range of topics that may need to be reviewed by stakeholders as part of the process of purchasing a Gorilla licence. If you have further questions, please don't hesitate to contact us by email (firstname.lastname@example.org).
The sections that are most often asked for are:
The Gorilla Experiment Builder is a cloud based research platform that allows researchers and students to quickly and easily create and deploy behavioural (reaction-time) experiments online.
Simply login to Gorilla using your browser to access:
Create your component questionnaires and tasks and then link them together into an overall experimental protocol.
Then deploy your experiment online and recruit your participants. You can do this via social media (i.e. Facebook) or paid services via our trusted partners (Prolific, mTurk, SONA and more) or by email.
Survey tools allow you to ask explicit questions and get subjective responses from the respondent.
In contrast, a behavioural study typically has lots of trials that capture the respondents behaviour in terms of accuracy and reaction times. From these raw metrics, secondary metrics can be derived to get an objective measure of behaviour.
Gorilla is built for running behavioural studies. The task builder is fully tooled – you don’t have to code – so you can create your study quickly and easily. You then configure the experiment protocol in the Experiment Tree tool.
This allows you to add randomisation, counterbalancing, repeats and delays to create a wide range of experiments designs.
Find out more about our tools here.
Build for free. Pay per participant.
This means it’s completely free to sign up to Gorilla and to use our questionnaires, task and experiment creation tools.
We only charge for data collection. Our current prices are shown here.
This model allows universities to teach students how to create tasks and experiments—unimpeded by cost, subscription plans or number of users.
Once researchers or students have built a study they’re happy with, they simply deploy it online for data to be collected.
Each student could send the link to a handful of friends, and once the data is in, the entire class can analyse the data. One study with 200 participants would cost just £150 + VAT.
We offer departmental licences starting at £2,000 + VAT that covers student usage. You can find out more in our separate pricing documents.
Researchers can design, create and complete studies in record time—and for a fraction of the cost of traditional methods
This means that entire studies can be condensed into days, rather than weeks—and for very little cost. Productivity is uplifted, and dead ends that might have taken months to uncover are quickly resolved.
Because Gorilla is so easy to use, technical staff have fewer support queries—freeing them up to help elsewhere.
When queries do arise, resolving them is faster (and can be done from anywhere) thanks to Gorilla’s online interface.
Gorilla operates on any device with a browser. Which means students can use their own laptops for lab work. Over time, this puts less pressure on the department to provide expensive computers.
Data can be collected online, which also reduces the need for testing rooms. This frees up valuable real-estate within the department and reduces facilities costs.
For online courses, students can work from any location, which means they don’t have to come to the department to get practical lab experience. This convenient way of working frees up space and reduces facilities and staff costs.
Sample tasks available in Gorilla can be cloned for easy, time-saving adaptation. Our support pages also provide everything you need to use the software.
We also offer technical email support to paying clients. However, we encourage students to problem solve themselves, as much as possible. In this way, they learn more, while accurately reflecting their skill level.
'Gorilla is designed for psychologists, so it has all the relevant options. I've found it really easy to use and very flexible.'
Hannah Betts, University College London
'Gorilla is quite simply a revolutionary product for the field of psychology. With so much of the field collecting data over the Internet, the unrivalled flexibility of Gorilla to create any behavioural task quickly and easily is invaluable. On top of that, it provides many complex tasks ready-made, as well as integration with many participant pools like SONA and Prolific.ac. In short, Gorilla really will transform your research and is a fantastic investment.'
Alex Jones, Swansea University
'Massively impressed with Gorilla. Logged on for the first time yesterday lunchtime. Had a demo experiment ready for students to adapt by 6pm the same day.'
Jenni Rodd, Senior Lecturer, UCL
'I use Gorilla in my research on typical and atypical social abilities. This combines experimental tasks and questionnaire measures, in a way that is not possible using other platforms. I found the platform intuitive, easily to learn, but also very powerful. And I have also been extremely impressed with the enthusiasm and (personalized) support from the Gorilla Team, and believe the platform has potential to be the market leader in online experimentation, both in and outside of academic settings!'
Punit Shah, Kings College London
'Gorilla is a great product providing great value to researchers conducting online experiments. The workflow is very clear and cleverly designed. It is a very efficient, flexible and powerful way of creating online experiments. The user interface is super user-friendly and there is practically no learning curve. Thanks for the great support service, too.'
Wing Lau, Xi'an Jiaotong, Liverpool University
'Gorilla lets me take my experiments online quickly and efficiently. The clear and straightforward interface allows me to map out the logic of my experimental designs, whilst its modular nature helps me to build and test components as I go. Taking my research online will dramatically increase my sample size, and help me to reach groups under-represented in my field.
Alexandra Hendry, Kings College London
In compliance with BPS (The British Psychological Society) requirements, identifying data, demographic information and performance data are all stored separately. They are downloaded separately from the metrics tab and joined together outside Gorilla using the Private IDs provided.
Our database architecture supports double-blind studies; you can join demographic data with performance data while remaining blinded.
If using Gorilla in conjuction with a third party recruitment service, it may be that you do not collect any identifying data. We do not collect IP addresses automatically, in order to ensure participant anonymity.
By default, data for each participant only becomes accessible when the participant completes an experiment, so if a participant withdraws from an experiment partway through you will not have access to their data. However, you can choose to manually include a participant who is partway through an experiment, which will give you access to their data. You can also choose to manually delete the data for any or all participants at any time.
Gorilla is fully compliant with data protection and security policies.
Gorilla is fully compliant with GDPR.
Gorilla is built around the existing BPS (The British Psychological Society) and NIHR (National Institute for Health Research) standards which were far more stringent than the Data Protection Act. Moreover, GDPR does not apply to data that “does not relate to an identified or identifiable natural person or to data rendered anonymous in such a way that the data subject is no longer identifiable.” The majority of our recruitment policies anonymise participants.
Gorilla is made, owned and sold by Cauldron Science Ltd (Cauldron).
Cauldron is incorporated in England and Wales under company number 07071678. Our VAT number is GB996693829. We are a micro-SME.
Our registered office is 2 Old Bath Road, Newbury, Berks, RG14 1QL and our business address is St John's Innovation Centre, Cowley Road, Cambridge, CB4 0WS.
Our Terms and Conditions can be found here.
Our List of Suppliers can be found here.
Our Data Processing Agreement can be found here.
Go here for more information about the code editor.
We have a seat licensing model. Each person signs up with their own email address and effectively has their own account. Each user then has complete control over any task, questionnaire, experiment and associated data that they have authored. This model fits with BPS (The British Psychological Society) requirements around data security; data is only accessible by the person that owns the experiment or those that they are collaborating with. Users can also collaborate on projects. When sharing projects the level of access (read, write, admin) can also be set.
We don't currently have a system for student accounts and supervisors. Any account holder is able to publish their experiments and the onus is on them to ensure they have done so in compliance with their institutions ethics and code of conduct.
When your licence expires, your account will revert to a Pay-per-Participant account. All your data, task, questionnaires and experiments will be maintained. You will still have access to all the editing tools and the previewing tools. You just won't be able to collect more data without first purchasing pay-per-participant tokens.
Gorilla is an ideal environment for teaching Research Methods, as students can get valuable experience in operationalising experiments, collecting data, and analysing the data collected.
The Experiment Tree makes the experimental design clear, which can often help students understand whether their experiment is adequately controlled. Getting Started: When students are getting started it can be useful to provide them with an experiment where they can change the preconfigured manipulations. For instance, they may change the timing of a task.
We have a suite of tools that allow teachers to manage classrooms. These allow you to:
For Masters students who may not have the time or inclination to learn to code, Gorilla offers a user-friendly environment in which to author completely novel tasks.
Read our Case Studies about UCL's and Birkbeck's experiences here:
Gorilla Experiment Builder is designed to resolve many timing issues and make reliable online experimentation open and accessible to a wider range of technical abilities. We use high resolution timers for accurate reaction times and frame counting for accurate stimuli presentation times - techniques that have only recently become available in all major browsers.
In 2019, we published our paper on timing accuracy in Gorilla. You can read it here.
Recently, we have also uploaded a pre-print where we examined the timing accuracies on various online platforms, browsers, and devices. You can read it here.
See our Timing in Gorilla website for a detailed technical overview of the timing techniques employed in Gorilla and to learn more about timing in online experiments through some extra resources.
Microsoft Azure guarantees that our servers will be working 99.95% of the time. There are 525,600 minutes in a year. That 0.05% when our servers could be down - outside of our control - equates to ~263 minutes a year. This is equivalent to ~2 minutes a month or ~44 seconds a day. At scale, very rare events happen surprisingly often.
Microsoft Azure performs far above this threshold, nevertheless server downtime is a reality of internet research, and we want to give you the information you need to make an informed decision.
The risk to your experiment of server downtime will depend on your recruitment method and your target participants.
On our side – as long as you haven’t included participants at the start node – no Gorilla fees would be due. If you are paying participants through a participant recruitment service, you may need to check their policy.
We're often asked to provide draft text for an ethics application.
We will use Gorilla (www.gorilla.sc) to collect data for our study. Gorilla is a cloud software platform specifically for the behavioural sciences.
We also recommend stating the date window within which data was collected, so that someone reading the study could cross-references this with our release notes.
A list of publications that cite Gorilla can be found here.
We also have the following interviews from ambitious researchers that have embraced online research methods.