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All CRO-related psychology theories in one place

Using psychology for your (A/B) testing gives you a higher chance of success and increased conversions.

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What is the CRO-tool?

CRO-tool is a search engine like Google. Only our search engine for psychology theories has its own content. For example, you can search for on the keyword 'Feelings', as first result you would get back the Empathy Gap from the category Decision Making followed by Cognitive bias and Peak-end rule (those results are related to the Empathy Gap).

You want more information about the psychology behind the Empathy Gap right? We've got the page that explains the Empathy Gap, but also gives examples about how it can be used/applied and sources where you can find more information.

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Stop searching for psychology data, we've done it for you! We've got all this psychological data for you in a matter of seconds.

Accessible data

CRO-tool includes examples on how psychological theories can be applied to your websites including hypotheses and designs.

Successful testing

Increase the success rate of your A/B tests using psychological theories that can be found within CRO-tool.

What our users say

Lukas Volz testimonial for CRO tool

The CRO-Tool supports me in my daily tasks as an online marketing lead by applying psychological theories in practice, enriching presentations with scientific basis and impart knowledge to colleagues and team members.

Lukas Volz

Online Marketing Lead at InterNetX
Julieta Díaz de Vivar testimonial for CRO tool

I had an amazing experience using Cro-tool! It's a search engine where you can't just find information about psychological theories: you can also check overlapping theories, making more information accessible, and making your work easier.

Julieta Díaz de Vivar

Cognitive therapist at Práctica Privada
Lars Berntzen Arholm testimonial for CRO tool

The CRO-tool is brilliant! It contains the most important theories, biases and laws you need to optimize your website. Even as a psychologist, you sometimes forget the name of a law or a bias. The CRO-tool makes it fast and easy to find it again!

Lars Berntzen Arholm

UXSpecialist at Sirius Ability
Paul van der Venfor CRO tool

CRO Tool is perfect if you need a more extensive explanation or just background in why people behave the way they do. For us CRO specialists it is vital to understand behaviour, and CRO tool is a really easy to use and helpful tool to get these insights.

Paul van der Ven

Conversion Specialist at Dept Agency

Combining Data and Psychology

Psychology gives you a direct opportunity of changing a user's behavior and this is the goal of conversion rate optimization.

It doesn't matter if you're new or experienced in CRO, you probably will not remember all psychological theories that can be applied to CRO. That's why we've built this search tool. With this tool you can search for psychology theories which you can use for writing a hypothesis. This will help you to find new tests to do and increase the likelihood for your tests to succeed.

Frequently Asked Questions

What does CRO mean?

CRO stands for Conversion Rate Optimization. CRO means improving the conversion rate of a website so that for example more leads or sales are obtained from the same number of visitors.

How does CRO work?

By thinking about the barriers visitors can encounter, such as adding shipping costs or inventory data tests can be done to increase conversion. The conversion optimization process takes place continuously meaning it’s always ongoing and not something you can do for only a month for example. Choices are made from data obtained from analyzes. This data is combined with psychology and from this point hypotheses are written. These hypotheses can be prioritized and tested using for example A/B tests.

How can you use CRO to improve websites?

When you have traffic on your website CRO can be used to increase conversions for example: buying a product, purchasing a service, subscribing to a newsletter, filling out a contact form, requesting information, or downloading a white paper. With CRO you don’t send extra traffic to your website, but you rather use the traffic that’s already there to take the action they and you want to take them. You can do this by doing A/B tests for example to see what works better, the current version of a page, or the one with the changes you had in mind. It’s data-driven, so no opinions are needed.

What impact does CRO have on user experience?

Both CRO and UX (user experience) aim to help users to get to the goal they have in mind with minimum effort. They enhance each other. When there are new ideas to enhance the user experience CRO can write hypotheses for it test it to see if it’s actually true. In the end both CRO and UX are working on improving the experience for the users.

What does CRO have to do with A/B tests?

One of the methods used by CRO is A/B testing. A/B testing means show half of the visitors of your website the normal version of the page and the other half a different version of the page. This way you can track which version of the page is doing better. This is all based on data and can be used to decide if this is increasing the conversion rate of the set goal.

What does a CRO specialist do?

Someone with the title CRO specialist is the person who's working on the optimization process of a website. There are different disciplines within CRO like for example UX design, user research, psychology, and data analyses. What they all have in common is that they focus on increasing conversions on the website, bind all of these skills together and you have a CRO specialist. A CRO specialist is somebody that comes up with ideas from data that can be tested on the website, writes the hypotheses, most of the time builds the tests and analyzes the tests afterward.

Why is psychology important for CRO?

Psychology is used in the part of CRO when you write a hypothesis. A hypothesis gives the CRO specialist a relational statement which then again can be tested by scientific methods. It helps to determine the type of testing method that will be used to get results. A hypothesis is often drawn from the already existing knowledge and theories that are around. Using psychology in CRO is increasing the chance of success of your tests.