Sos serkel e dow dot toɓɓere gooto, tee yiy no timmundi woniri, e waktu ɗum waɗata. Ko ɗum free, alaa winnditagol.
Winndii ko dental HelibrainƳeewtaama ko Robert(Engeleere), jannginoowo PhD e fisik biyolojiBayyinaama Ƴeewtaama kadi
No janngirtaa skor maa
- Timmugol: 100% soodii e ɗuum ɓaawo nde laawol maa yaadiri e serkel ɓurndi weeɓde, e hakkunde; ɗum waɗetee ko eɗen njiɗi e radius serkel ndee. Laawol nde ɓuuli e 2% e hakkunde heɓata skor 98%.
- Noɗɗi laawol maa: ɗemngal to laawol woni e dow serkel, haa ɗemngal to laawol yaadiri haa feewi.
- Serkel cuuɗi: ko serkel ɓurndi weeɓde ngam waɗde ɗum e no sosaa. Laawol maa ɓadii e ɗum, skor maa ɓeydotoo.
- Ɓurɗo maa: skor maa ɓurɗo e ndee browser, mooftaa ɗum e mum'en ɗiɗi: ngam touch e ngam mouse, sabu honndu e mouse sosirtaa ɗi no feewi.
- Laawol: e sa'aaji ɗiɗi (clockwise) walla e sa'aaji ɗiɗi ɗiɗi (counterclockwise). Yimɓe ɗuɗɓe e USA sosata ɗum e sa'aaji ɗiɗi ɗiɗi; e Japan, ko e sa'aaji ɗiɗi sosata [1].
A waawi sosde serkel timmundi daande?
Hara timmundi wonaa, kono a waawi ɓadaade. Serkel sosaaɗo e honndu maa ɓuula seeɗa, sabu daande ina ɓooyna, ina yaawna nde ɗowata e fukkere [2]. E miijo amen, laawol nde yaadiri e serkel mum e 2% e hakkunde heɓata skor 98%. Serkel ɓuri anndude e widewo nde ɓurti e viral, sosaaɗo e ɗowru matematik dii Kanada, waɗi timmugol 99.7% e tawde bloger gooto ƴeewti ɗum [3].
Kabaaruuji yaawɗi
- Laawol ɗowtotoo ko ɗo a mawni: e sosde 50,000 ɓuri e USA e nder game Quick, Draw! Google's, 86% loowɗe sosaaɗe e sa'aaji ɗiɗi ɗiɗi; e sosde 800 ɓuri e Japan, 80% e sa'aaji ɗiɗi [1].
- No winndiraa ina waɗa aslol: sukaaɓe Japan sosata loowɗe e sa'aaji ɗiɗi ɓurɗe haa ɓe njahdi e ekkol; sukaaɓe USA e sa'aaji ɗiɗi ɗiɗi ɓurɗe. Sukaɓe Japan toɓɓe e USA sosii ɗum e sa'aaji ɗiɗi ɓurɗe seeɗa [4].
- Laawol yaawde daande: daande ina yaawna seeɗa e fukkere tiiɗunde, ina yaawde ɓurɗe e nokkuuji ɗi ɓuuɓɗi (“laawol 2/3”). E serkel, fukkere fotata e nokku fuu, ɗum waɗata laawol ndee ina waɗa yaawde gootunde [2][5].
- “Champiyon aduna”: ɗowru matematik mo sosii serkel e widewo viral wi'i caggal ɗum wonde innde mum “champiyon aduna e sosde serkel daande” ko joke o haalaniino ekkol [6].
- Alaa alama kisal: miijo 1970s wonde sosde serkel e sa'aaji ɗiɗi ko alama yeeso nde e ɗaɓɓitannde hakkille, heɓaani ballal e ɗaɓɓitanɗe ɗe caggal mum [7].
No ƴeewtagol serkel huutortee
- Sos. Suɓo honndu maa (walla doŋngol mouse) e nokku kala, sos serkel gooto e nder dot ɗin, e laawol gootol.
- Ƴeew ɗum e waktu mum. So a yahii seeɗa e dow serkel ndee, timmugol yiyotoo e hakkunde, laawol maa wayloto noɗɗi.
- Yaltin daande. So a timmii, serkel ɓurndi weeɓde yiyotoo e cuuɗi, tee no sosɗaa ƴeewetee skor.
Ngam sosde maa limtee, ɗum foti yahde haa 320° e dow serkel, timmude ɓadaade e nokku ɗo fuɗɗi, heewde (radius mum foti wonde ko ɓuri 15% e nder yaajeendi nokku sosde) tee waɗe ɗum ko ɓuri 30 sekond. Koyɗum gooto tan, tiiɗno. Min nattina dot maa e serkel e laawol least squares, tee min ƴeewta majjere mum e serkel ndee e hakkunde. Loowɗe daande ƴeewetee e loowɗe daande tan.
Hol ko waɗi serkel timmundi ina saɗi sosde?
Sosde serkel naamnii homborde maa, hordu, wrist e pelle maa ngolla e kawtal, tawi laawol sosde ina wayla sahaa kala. Daande maa ina yaawna e ina ɓooyna no fukkere ndee waɗiri [2], tee waylitaare yaawde kala ina waawi addude laawol yahde e yeeso walla e les. E telefon, honndu maa kadi ina suuɗa laawol nde a sosata. Mouse huutortoo ɓanndu ɗiɗi fuu, ɗum waɗi loowɗe mouse e loowɗe daande heɓata skor ɗi feerii.
Tinndinooje ngam serkel maa ɓurta timmude
- Sos serkel mawɗi, huutoro ɓanndu ɗiɗi fuu. Loowɗe pamɗe nde pelle tan sosii ina ɓuula ɓurɗe.
- Hokkir yaawde gootunde. Hoto sos seeɗa haa ɓuri; sosde yaawɗe seeɗa ina fawna ɓuulugol.
- Ƴeew e dot hakkunde, wonaa e laawol. Jokkondiral e hakkunde e nder ɗuum ko golle maa fuu.
- Uddu koyɗum e laawol ɓuuɓngal. Loowɗe ɗuɗɗe majjina poñte e gasirgol, tawi yimɓe yaawna ngam heɓde fuɗɗorde.
Hol ko ƴeewtagol ngal waawi anndinde, tee hol ko ngal waawaa anndinde
Ƴeewtagol serkel ko caɗeele ɗamɗam ngam ɗowtagol daande. Skor maa ina ɗowtora kaɓirgol maa, yaajeendi screen maa, huutoraade daande, pen walla mouse, e harjo. Ɗum wonaa ƴeewtagol doktoor walla ƴeewtagol ɓuulugol daande; doktoor'en huutortoo golle sosde goɗɗe, hono spiral, ngam ɗuum [8]. Laawol nde sosɗaa alaa maana e kisal maa.
Naamne ɗe naametee ko yaawɗum
A waawi sosde serkel timmundi daande?
Serkel sosaaɗo e daande timmundi ɗoon e ɗoon alaa, kono yimɓe heɓata ɗum ɓadaade. E ƴeewtagol serkel Helibrain, timmugol ko 100% soodii e ɓuulugol laawol maa e hakkunde; laawol nde yaadiri e 2% e hakkunde heɓata skor 98%. Heɓde 100% ko timmundi naamnii laawol nde alaa ɓuulugol fuu.
Yimɓe ɓurɓe sosata serkel e sa'aaji ɗiɗi walla e sa'aaji ɗiɗi ɗiɗi?
No skor timmugol am limetee?
Ƴeewtagol serkel Helibrain ina nattina serkel ɓurndi weeɓde e nder dot fuu e laawol maa (least-squares fit), caggal ɗum ƴeewta hol no dot kala yaadiri e serkel ndee. Majjere e hakkunde, e nder radius serkel ndee, ko ɓuulugol maa; timmugol ko 100% soodii e ɓuulugol. Oval, dent walla laawol ɗiɗi ɗaɓɓitii e dow mum ina ustata skor.
Hol ko waɗi skor am feerii e telefon e ordinateer am?
Daande e mouse huutortoo masiŋoji e jillondiral feerii, tee screen telefon ɓuri famɗude. Ɗum waɗi ƴeewtagol serkel Helibrain mooftira skor maa ɓurɗo e mum'en ɗiɗi: ngam touch e ngam mouse, tee ƴeewta ko ɗi jokkondirii e huutorgal gootunde.
No sosirtaa serkel timmundi tawa compass alaa?
Daggin honndu maa e hakkunde, huutoro pelle pamɗe walla wrist maa hono pallal, tee firto deftere walla ɓanndu maa e dow mum. Ngam sosde daande, sos loowɗe mawɗe e ɓanndu maa fuu, e yaawde gootunde. Harjo e ƴeewtagol ngal, ƴeew noɗɗi laawol maa ngam yiyde nokku ɗo a yaadiri.
Ƴeewtagol serkel Helibrain ko free e goonga?
Eey. Ƴeewtagol e timmugol maa fuu ko free: alaa winnditagol, alaa email, alaa yoɓde. Helibrain heɓata ceede e app mum, ɗum jogii program free e program ɗe yoɓetee; a soklaa app ngam huutoraade ƴeewtagol ngal.
Ƴeewte ɗe jokkondiri
- Ƴeewtagol anndugol sahaaNo a mbaawirta anndude no sekond seeɗa njaha.
- Ƴeewtagol sahaa jaabawolNo yaawirtaa jaabawol so maande ndee feeñi.
- Ƴeewtagol ɗowtagol laawolNo yaawirtaa jokkondirde daande e ɗowtugol, tee waylude hakkunde limɗe e alkule.
Yiy ƴeewte hakkille ɗe njeyaa 43 fof
Aɗa yiɗi huutoraade ɗum ñalawma kala? App Helibrain (e Engeleere tan jooni) ena jogii feere nde yoɓetee, kadi ena jogii feere nde alaa yoɓde.
Hollit hello ngoo iwdi: Sos serkel timmundi. Helibrain. 2026. https://helibrain.com/ff/draw-a-perfect-circle. CC BY 4.0.
How this test works
This game tests how steady and even your hand is. Put your finger or the mouse button down and draw one circle around the dot in a single stroke. When you lift, we fit the best circle to your line and measure how far your line strays from it, on average. Your roundness score is 100% minus that average wobble, so a line that wobbles by 2% scores 98%. Motor-control labs have measured hand-drawn curves like this since the 1980s.
Version 1 · Cite this test:
Helibrain (2026). Draw a perfect circle, v1. https://helibrain.com/draw-a-perfect-circle/methods
Ɓeynguure
- Sonnad N (2017). How do you draw a circle? We analyzed 100,000 drawings to show how culture shapes our instincts. Quartz, 15 June 2017 (ƴeewtagol keɓe Google's Quick, Draw!). qz.com/994486/the-way-you-draw-circles-says-a-lot-about-you/
- Lacquaniti F, Terzuolo C, Viviani P (1983). The law relating the kinematic and figural aspects of drawing movements. Acta Psychologica 54(1–3):115–130. doi.org/10.1016/0001-6918(83)90027-6
- Höhle M (2018). Judging freehand circle drawing competitions. Blog post, 31 July 2018. mhoehle.github.io/blog/2018/07/31/circle.html
- Amenomori Y, Kono A, Fournier J, Winer GA (1997). A cross-cultural developmental study of directional asymmetries in circle drawing. Journal of Cross-Cultural Psychology 28(6):730–742. doi.org/10.1177/0022022197286005
- Fraser DS, Di Luca M, Cook JL (2025). Biological kinematics: a detailed review of the velocity-curvature power law calculation. Experimental Brain Research 243(5):107. doi.org/10.1007/s00221-025-07065-0
- Wikipedia. Alexander Overwijk. en.wikipedia.org/wiki/Alexander_Overwijk (checked 4 November 2026)
- Boake C, Salmon PG, Carbone CR (1983). Torque, lateral preference, and cognitive ability in primary-grade children. Journal of Abnormal Child Psychology 11(1):77–83. doi.org/10.1007/BF00912179
- Wang S, Schwirtlich T, et al. (2025). Clinical applications and measurement properties of the digitized Archimedes spiral drawing test: a scoping review. Movement Disorders Clinical Practice 12(11):1742–1755. doi.org/10.1002/mdc3.70278
No min heɓiri ndee kelle: dental Helibrain winndi ɗum e ɗowirde e ɗaɗi ɗi limtinaa dow, tee Robert(Engeleere) (jannginoowo PhD e fisik biyoloji) ƴeewti ɗum e 4 jolal 2026. Min hesɗitina ɗum so ɗowirɗe ɗee waylii.