Gorilla Demos and Examples List

If you already have a Gorilla account check out the Samples page to view a complete list of all Gorilla's samples, demonstrations and examples.

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Remember if you see a Task, Questionnaire or Experiment you like the look of, simply clone a copy into your own project and select edit to make your own changes!

Classic Examples

Full Classic Examples List


Below are some classic attention tasks.

Change Blindness

This is a classic 'Change Blindness' Task. Measure how long it takes participants to spot the difference!

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Dot Probe

The dot-probe is a classic task used to assess selective attention.

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The classic Flanker Task (or Eriksen Flanker Task), is a 'response inhibition' test used to assess participants ability to suppress responses.

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Go / No-Go Task (Children)

This Inattention and Impulsivity experiment is based on a lab study conducted by Serena Bezdjian, Laura A. Baker, Dora Isabel Lozano, and Adrian Raine in 2009 on twins aged 9 and 10. Reference: Bezdjian et al. (2009)

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Mackworth Clock Task

This tests vigilance, a prolonged state of concentration. Participants must stare at the image of a ticking clock and identify when the second hand jumps more than it should. This example has a jump rate of around 8% and lasts a minute, whereas a full task would jump around 0.5% of the time, and last much longer. Reference: Mackworth (1948)

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Posner Cueing Task

This spatial orientation task measures the effects of cueing on reaction times to target stimuli. This example requires the participant to press one of two keys when a green 'thumbs up’ appears in the corresponding box. 75% of the time, a green circle will appear in the correct box before the stimulus appears. Reference: Wikipedia

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Sustained Attention Test

A classic sustained attention reaction test (or SART).

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Below are some classic attitude tasks. To see some IAT data and analysis collected using Gorilla, see this study.

Implicit Association Tests (IAT):

IAT: 'Pictures and Pictures'

View a classic Implicit Association Test; Category sorting task, categories of images are paired with another category of interest. Differences in accuracy and RT used to potentially measure implicit bias.

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IAT: 'Pictures and Words'

View a classic Implicit Association Test; Category sorting task, strength of association between categories of images and word categories. Difference in accuracy and RT used to potentially measure implicit bias.

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IAT: 'Words and Words'

View a classic Implicit Association Test; Category sorting task, strength of association between two sets of word categories . Difference in accuracy and RT used to potentially measure implicit bias.

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IAT: 'Age'

View a classic Implicit Association Test; compares your RT and Accuracy to categorising different aged people against positive and negative words. This is potentially a measure of implicit bias towards groups.

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Other Attitude Tasks:

Semantic Priming

View a Classic semantic priming task; targets are paired with related or neutral primes. The semantic priming effect is the difference in RT and Accuracy a related prime produces.

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Bot Checks:

These bot checks are designed to be easy for humans, hard for robots. Clone one or two into your experiment to make sure you're only including data from real participants!

Anagram Task

Click the scrambled letters in the right order to make a word.

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Naming Task

Name the animal in the picture! Participants are presented with the silhouette of a common animal. They have to type the type of animal.

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Real Effort Number Counting

Count how many zeroes appear in a grid. This is a classic real effort task. A grid of 1s and 0s is shown to the participant. They have to respond with the number of 0s. The grid is shown as an image, to make it more bot proof.

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Sentence Unscrambling Task

Click the scrambled words in the right order to make a sentence.

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Visual Search

Can you find the cat among the dogs?

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Rating Scale

Select 'Strongly Agree' on a Likert scale. This is a simple questionnaire.

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Click a Colour

Choose a colour from the list of words. This is a simple questionnaire.

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Below are some classic cognition tasks:

Deary-Liewald Task

This keyboard task measures response time and choice response times, which correlate with general intelligence.

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Relational Reasoning

This classic task assesses your ability to complete patterns across shape and colour, the participant has to choose an object to complete a puzzle display. Choose between a short demonstration version and a longer 80 trial version with varying difficulty levels.

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Remote Associates Test

This task is used as a measure of creativity. Participants are given a group of 3 apparently unrelated words and must think of the 4th word which connects them.

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Decision Making:

Below are some classic decision making tasks:

Delay Discount

This task assesses the relative weighting a participant puts on reward at different time periods. Will they accept a delay in receiving a reward for a greater gain.

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Teen Risk Judgement

Measures a teenager's judgement of risky situations, before and after feedback on how different groups rate the risk of these situations.

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Urn Task

An evidence accumulation and judgement task - the participant is repeatedly asked to reveal one of two different urns. The urn contents change with each trial and the participant has to choose the urn which most likely yields a reward.

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Willingness To Pay

This task assesses how much subjects are prepared to pay for different items: This example uses snacks.

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Economic Games:

Below is a classic economic game:

Prisoner's Dilemma

This is a classic experiment in Game Theory. It assesses a person's bias towards cooperating or betraying another for gain. The participant completes multiple instances, with different outcomes given - thus introducing a learning element. Reference: Wikipedia

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Below are some education tasks:


This task assesses an individual's comprehension ability when reading textual information. First a segment of text is read, then participants are asked questions assessing their understanding.

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Maths Test

This type of assessment aims to quantify an individual's mathematical ability. Participants are shown different math examples in a question-answer format. They must input the correct numerical answer as quickly as possible within the timelimit.

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Vocabulary Learning & Testing

Here a number of unfamiliar words are shown (French in this example), and are paired with their familiar translations. They are then tested with all words on the screen (choose the translation by clicking), and then in a free recall stage (type in the answer).

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Executive Function:

Below are some classic executive function tasks:

Alternate Task Switching

Participants complete two different tasks that alternate every two trials. Participants typically slow down between tasks as they shift attention. In this example, one task involves identifying a shape, and the other task involves identifying the colour of that shape. Reference: Wikipedia

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Conditional Feedback

This conditional feedback task assesses how participants learn different stimulus-response mappings by rewarding certain responses to images over others. For example; response 1 pays £1 against response 2, which pays £5.

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Cued Task Switching

Participants complete two different tasks that switch frequently. This differs from alternate task switching as cues indicate which task participants must complete for each trial, rather than switching for alternate trials. In this example, participants must either identify colour or shape. Reference: Wikipedia

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Digit Span Text Entry

The Digit Span is a classic Short Term Memory (STM) task, participants are asked to repeat back increasingly lengthy sequences of numbers. The longer the sequence they are able to recall, the greater the assumed STM capacity. Reference: Wikipedia

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Iowa Gambling Task

In this classic Iowa Gambling Task, your goal is to win as much money as possible. You'll start with $2000. Each card selected will give you a reward but sometimes you'll also have to pay a fee. Try to see how much money you can make!

This task is based on the original procedure described by Bechara and colleagues: Reference: [Paper] Bechara et al. (1994)

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Probabilistic Learning - 2WFC

Participants learn associations between image stimuli which have noise associated with them. In this example participants must learn which flowers live in a forest, one flower is more likely to be correct (more probable for that forest). At the end of learning participants have to choose the correct flower (the more probable one). Reference: Wikipedia

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Probabilistic Learning - Round Feedback

This probabilistic learning task comprises separate 'rounds' which assess the participants ability to learn from uncertain information. You receive feedback after each response - which is only accurate to a certain probability. At the end of each round you are given feedback on the actual total number of correct responses. Reference: Wikipedia

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Simon Task (Stimulus-Response Compatibility)

Measures the stimulus-response compatibility effect. This version is a left-right location task, where word and location match and mismatch. Mismatched trials typically have longer response times than matched trials. Reference: Wikipedia

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Spatial n-back

This n-back task requires participants to respond when any given item is repeated in a sequence n instances ago. So on a 1-back trial repeated targets would require a response, 2-back would have another item inbetween, and 3-back would have 2 items in between. Reference: Wikipedia