The core difference is simple: a Flanker task asks you to identify a central target while ignoring nearby distractors, whereas a Simon task asks you to respond to where a stimulus appears rather than what it is. That distinction decides what counts as a correct answer. In the Flanker Test, the outlined centre arrow supplies the answer direction, while the four surrounding arrows provide matching or conflicting context. The browser Flanker Test is therefore a Flanker-style exercise, not a Simon task, even though its controls are labelled Left and Right. It uses a product-authored route of 12 rows: six matching and six conflicting. Every row contains five arrows, and only the outlined arrow in the middle is correct. After the route, the page shows accuracy, average response time on matching rows, average response time on conflicting rows, and an interference index. Those outputs summarize one private game on one device. They do not diagnose attention, measure intelligence, establish a clinical result, or provide a Simon-task score. This guide explains the difference between the tasks, shows which rule the tool follows, and gives the exact steps for completing the route without turning the result into a claim about personal ability.
Where Flanker and Simon Diverge
The quickest way to distinguish the tasks is to ask which piece of information controls the response. In a Flanker task, the target is the central item, and the surrounding items are flankers that may support or oppose the target rule. In a Simon task, the important feature is the location in which a stimulus appears: its identity does not determine the required response.
| Feature | Flanker task | Simon task |
|---|---|---|
| Core question | Which central target should be selected? | Which response matches the stimulus position? |
| Information that controls the answer | The identity or direction of the target | The left or right location of the stimulus |
| Role of distractors | Flanking arrows may agree or conflict with the centre arrow | The stimulus identity is not the response rule |
| Typical decision | Ignore the surrounding arrows and identify the centre target | Use where the stimulus appears to select a response |
| In the featured browser tool | Flanker Test implements the five-arrow centre-target format | The Flanker Test does not include Simon-style position trials |
This means the names should not be treated as interchangeable labels for the same reaction-time exercise. A Flanker result describes performance under a target-identity rule, while a Simon result describes performance under a position-based rule. The Flanker Test makes the first rule explicit so you can see exactly what is being tested and exactly what is being reported.
Choose the Task by the Rule You Need
Choose the task format according to the decision you want to practise, not simply by the number of buttons or arrows on the screen.
- Choose a Flanker-style task when the centre item is the answer and surrounding items can point in the same or opposite direction.
- Choose a Simon-style task when a stimulus appears on one side and your response must follow that position rather than the stimulus identity.
- Check the instruction before starting. A Left or Right control does not automatically make an activity a Simon task; in this tool, those labels identify the direction of the outlined centre arrow.
That final point resolves a common source of confusion. The browser game contains five arrows, with the middle arrow outlined. You are not deciding which side of the screen contains the target, because the target is always in the middle. Instead, you are deciding whether that outlined arrow points Left or Right while the four outer arrows provide context. This makes the tool a direct way to explore the defining rule of a Flanker-style exercise.
How the Fixed Route Creates Conflict
The route contains exactly 12 product-authored rows. Six are matching rows, where the surrounding arrows point in the same direction as the centre arrow. The other six are conflicting rows, where the surrounding arrows point in the opposite direction. “Matching” and “conflicting” describe the relationship between the arrows in a row; they do not describe whether your selection was right or wrong.
Only the outlined middle arrow determines the answer. The four surrounding arrows never introduce a second rule that you need to infer. For example, the surrounding arrows pointing Right do not make Right correct if the outlined centre arrow points Left. Once you make one response for the visible row, the game immediately advances. A repeated key event or extra click cannot add a second response to that row.
The fixed structure also makes the final summary straightforward to describe. Restarting returns to the beginning of the same route rather than replacing it with a new set of rows. The resulting figures are therefore within-route summaries of what happened during the current session, not comparisons against another route, player group, or published benchmark.
Play the Fixed 12-Row Flanker Route
Use the following sequence to complete the game while keeping its timing and input safeguards intact:
- Open the game with the tab visible. Keep the browser tab in view so the timing safeguard can distinguish an active response from time spent in another app.
- Start the fixed route. The game loads a 12-row sequence containing six matching and six conflicting five-arrow rows.
- Locate the outlined centre arrow. Ignore the direction of the four surrounding arrows when deciding the answer.
- Choose the centre arrow’s direction. Use the large Left or Right buttons, or optionally press the Left Arrow or Right Arrow key.
- Allow one response to register. The page accepts a single answer for the visible row and immediately moves to the next one. Extra clicks and repeated key events cannot alter that row.
- Continue through all 12 rows. Apply the same centre-arrow rule to both matching and conflicting rows rather than changing your strategy based on the outer arrows.
- Use Resume this row after an interruption. If the page becomes hidden, the current row pauses. When you return, press Resume this row to start a fresh visible response interval for that same row.
- Review the final panel. After the twelfth response, read the accuracy, both within-route averages, and the interference index. Restart is available when you want to replay the same fixed route.
What the Result Panel Measures
The result panel separates correctness from timing and then compares the two kinds of row. Each measure answers a different question about the session.
| Result | Meaning | How to read it |
|---|---|---|
| Accuracy | Overall correctness across the fixed route | A faster session with more incorrect selections is not automatically presented as better. |
| Matching-row average | Average response time on the six rows where the surrounding arrows agree with the centre arrow | It describes timing within this route only. |
| Conflicting-row average | Average response time on the six rows where the surrounding arrows oppose the centre arrow | It can be compared with the matching average from the same session. |
| Interference index | Conflicting-row average minus matching-row average | Positive means the conflicting average was higher; negative means it was lower; zero means the averages were equal. |
The interference index is defined plainly as conflicting average response time − matching average response time. It is not ranked against another player, age range, classroom, workplace, clinical sample, or published reference. A positive value indicates slower conflicting-row timing within this route, while a negative value indicates faster conflicting-row timing. Neither sign carries a clinical label on its own.
The page’s visibility safeguard reduces one source of confusion. When a row is hidden, its timing pauses instead of treating background time as part of the next answer. Returning and pressing Resume this row starts a new visible interval for that same response. Even so, the game is not a standardised timer or precise instrument. Screen size, input method, browser scheduling, interruptions, familiarity with the route, and ordinary day-to-day variation can all affect a session.
Private Play Without Ability Claims
The Flanker Test runs entirely in the browser. It does not request an account, profile, name, camera, microphone, or upload. The shared game shell may keep a local best score in browser storage, but that is not an online leaderboard, and it is not sent to Lizely. Your route results remain a record of this private browser game.
It is also important to keep the purpose narrow. The game is an entertainment exercise, not a clinical, IQ, or cognitive assessment. It does not diagnose attention, measure intelligence, or show that your brain has improved. There is no clinical interpretation, health threshold, norm group, educational score, or professional use. If you need support involving health, learning, work, or accessibility, a qualified assessment is the appropriate route rather than a score from this game.
So the definitive answer to “flanker task vs Simon task” is straightforward: a Flanker task asks you to identify the target despite conflicting neighbours, while a Simon task asks you to respond according to stimulus location. The Flanker Test follows the Flanker rule. Its Left and Right controls name the centre arrow’s direction, its 12 fixed rows supply matching and conflicting context, and its final interference index compares the two timing averages from that route alone.
For a deeper look, see Four Color Map Puzzle for Beginners: Rules and Steps.