Open-Source Psychometrics Project
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Derrial Book Personality Statistics

Derrial Book is a character from Firefly + Serenity. This page summarizes crowd sourced ratings of their personality collected from users of the Statistical "Which Character" Personality Quiz. People who take the quiz are asked if they would also be willing to volunteer to rate characters that they know. The ratings are made on a 100 point scale between two adjectives and then all averaged together into a composite. Because of the "law of large numbers" (a.k.a. wisdom of the crowds) this profile is very reliable. If you take one persons opinion of what a character is like and compare it to the opinion of another person about what that character is like, they could be very different. But if you compare the opinions of two groups, the difference gets smaller and smaller the larger the groups.

The table shows the average rating the character received for each trait in the survey. Because the questions are bipolar adjective pairs, they are reversible (i.e. a score of 25 on short<--->tall is the same as a score of 75 on tall<--->short). On this page, traits that had an average score below the midpoint have been reversed so they can be listed in order of most to least extreme for that character. The table also shows this character's relative rank on that trait compared to all other characters in the database. The standard deviation of ratings is shown, the basic idea here is that if the standard deviation is higher then that means there is less agreement between raters on that trait (the less agreement, the larger the sample size needed to get a reliable estimate). The number of raters is how many different individuals submitted a rating for that trait with this character; each rater rated only a random subset of traits for each character when they were surveyed.

TraitAverage ratingRankRating standard deviationNumber of raters
egalitarian (not racist)94.727.110
theist (not atheist)93.8413.2115
self-disciplined (not disorganized)93.2408.5320
mature (not juvenile)92.5812.0107
monastic (not hedonist)92.5110.312
studious (not goof-off)92.23210.48
deep (not shallow)91.939.814
soulful (not soulless)91.42315.5116
respectful (not rude)91.21611.2341
persistent (not quitter)91.113211.417
devout (not heathen)90.7412.5287
human (not animalistic)90.61011.3235
eloquent (not unpolished)90.5299.8207
chaste (not lustful)90.3412.2344
civilized (not barbaric)90.33910.6273
spiritual (not skeptical)90.1814.9357
tasteful (not lewd)89.9813.1317
kind (not cruel)89.95712.2262
calm (not anxious)89.8612.6283
diligent (not lazy)89.717211.1355
wise (not foolish)89.42314.9320
nurturing (not poisonous)89.23112.0112
competent (not incompetent)88.813113.6237
reasonable (not deranged)88.81310.918
high IQ (not low IQ)88.615510.0220
modest (not flamboyant)88.51114.0323
confidential (not gossiping)88.55313.7338
master (not apprentice)88.58813.7134
bookish (not sporty)88.110013.0245
neat (not messy)88.06713.3201
patient (not impatient)87.91116.4127
sensible (not ludicrous)87.71412.4289
resolute (not wavering)87.73010.012
stable (not moody)87.4412.8344
altruistic (not selfish)87.12615.0292
loyal (not traitorous)86.721515.0331
minimalist (not pack rat)86.6710.38
confident (not insecure)86.58612.4295
frugal (not lavish)86.51014.4295
forgiving (not vengeful)86.42915.3342
existentialist (not nihilist)86.3114.490
sober (not indulgent)86.0816.7322
compersive (not jealous)86.0611.6223
cooperative (not competitive)85.91516.2350
orderly (not chaotic)85.55014.9315
deliberate (not spontaneous)85.58411.8301
heroic (not villainous)85.316214.7355
humble (not arrogant)85.12915.2327
old (not young)84.56211.1320
intellectual (not physical)84.413014.4342
warm (not quarrelsome)84.23316.6314
proper (not scandalous)84.24316.1338
wholesome (not salacious)84.1639.310
optimistic (not pessimistic)84.03917.5258
introspective (not not introspective)84.02722.318
🧕 (not 💃)83.9411.919
pro (not noob)83.519117.920
tactful (not indiscreet)83.53721.117
coordinated (not clumsy)83.218515.0315
inspiring (not cringeworthy)83.14616.9101
resourceful (not helpless)83.125517.996
🧠 (not 💪)82.815616.713
😊 (not 🤣)82.82914.58
legit (not scrub)82.712617.514
works hard (not plays hard)82.516014.5300
quiet (not loud)82.35914.2278
warm (not cold)82.09017.2238
genius (not dunce)81.715413.7370
demure (not vain)81.71317.1242
good-humored (not angry)81.69915.2250
communal (not individualist)81.5919.4110
self-assured (not self-conscious)81.414117.6247
angelic (not demonic)81.48518.0289
charismatic (not uninspiring)81.319516.7246
complimentary (not insulting)81.36618.8111
equitable (not hypocritical)81.34320.5130
cautious (not impulsive)81.26014.4343
emancipated (not enslaved)81.27917.8238
disarming (not creepy)81.26315.9117
literary (not mathematical)80.53418.6306
prestigious (not disreputable)80.412617.1285
valedictorian (not drop out)80.423423.627
genuine (not sarcastic)79.99719.9243
scholarly (not crafty)79.75120.0334
reasoned (not instinctual)79.53120.8288
alert (not oblivious)79.32087.415
historical (not modern)79.36917.0199
workaholic (not slacker)78.837915.680
pacifist (not ferocious)78.85320.2300
pure (not debased)78.810718.5293
worldly (not innocent)78.622821.9298
sane (not crazy)78.66315.612
penny-pincher (not overspender)78.44721.216
neurotypical (not autistic)78.213519.9272
no-nonsense (not dramatic)78.27019.5139
gracious (not feisty)77.91718.6182
metaphorical (not literal)77.92318.1226
philosophical (not real)77.82122.0191
independent (not codependent)77.821421.4297
treasure (not trash)77.436426.321
nerd (not jock)77.323818.4277
👨‍⚕️ (not 👨‍🔧)77.312920.026
manicured (not scruffy)77.233820.8323
honorable (not cunning)76.715722.5336
🚴 (not 🏋️‍♂️)76.61789.414
curious (not apathetic)76.516621.4323
🐘 (not 🐀)76.55027.213
fresh (not stinky)76.523119.322
🌟 (not 💩)76.430622.011
scheduled (not spontaneous)76.324319.3306
private (not gregarious)76.217624.2295
bright (not depressed)76.28618.2252
charming (not awkward)76.220820.3348
leisurely (not hurried)75.97717.8350
street-smart (not sheltered)75.826821.4290
refined (not rugged)75.621218.1321
active (not slothful)75.539816.0231
go-getter (not slugabed)75.437017.714
smooth (not rough)75.49018.0248
healthy (not sickly)75.331020.6263
glad (not mad)75.28718.39
interesting (not tiresome)75.022521.6239
utilitarian (not decorative)75.017721.5100
highbrow (not lowbrow)74.317520.2281
accepting (not judgemental)74.311623.9214
😇 (not 😈)74.316723.410
down2earth (not head@clouds)74.118424.3295
vanilla (not kinky)74.012624.5284
well behaved (not mischievous)73.912524.1283
mysterious (not unambiguous)73.914425.9288
👽 (not 🤡)73.910212.713
masculine (not feminine)73.833416.2343
classical (not avant-garde)73.614323.396
mighty (not puny)73.534319.4314
sweet (not bitter)73.315819.5256
low-tech (not high-tech)73.116922.1235
🤐 (not 😜)72.716616.812
rational (not whimsical)72.426222.6268
arcane (not mainstream)72.017423.9236
democratic (not authoritarian)71.818022.7279
open-minded (not close-minded)71.818722.0377
theoretical (not empirical)71.81024.1247
complicated (not simple)71.631927.4235
straight (not queer)71.552423.895
important (not irrelevant)71.548925.320
driven (not unambitious)71.460722.9246
bold (not shy)71.159119.4335
methodical (not astonishing)71.023823.5248
🤺 (not 🏌)70.935623.67
open to new experinces (not uncreative)70.835922.7290
gendered (not androgynous)70.661826.5103
decisive (not hesitant)70.440722.7275
👻 (not 🤖)70.312420.211
serious (not bold)70.113822.5297
🐮 (not 🐷)70.16720.914
🥾 (not 👟)69.917428.716
tall (not short)69.726814.7249
attractive (not repulsive)69.646019.0329
politically correct (not edgy)69.513724.3242
idealist (not realist)69.415726.596
beautiful (not ugly)69.251918.188
serious (not playful)69.038119.6313
🎩 (not 🧢)68.830927.59
morning lark (not night owl)68.712624.4141
tame (not wild)68.615521.6313
extraordinary (not mundane)68.538124.6271
luddite (not technophile)68.517621.9214
moderate (not extreme)68.511724.2244
stylish (not slovenly)68.335825.2297
joyful (not miserable)68.115121.114
formal (not intimate)67.523526.124
👩‍🔬 (not 👩‍🎤)67.522027.315
domestic (not industrial)67.415922.386
first-mate (not captain)67.131628.4289
rural (not urban)66.913623.328
feminist (not sexist)66.943022.513
🤔 (not 🤫)66.919028.313
🧗 (not 🛌)66.932720.110
poor (not rich)66.819424.1209
🐿 (not 🦇)66.826423.75
😀 (not 😭)66.719426.914
funny (not humorless)66.531220.6273
🧙 (not 👨‍🚀)66.421226.112
stoic (not expressive)66.321225.0364
relaxed (not tense)66.19023.8337
involved (not remote)66.044726.6230
child free (not pronatalist)66.037931.1186
proletariat (not bourgeoisie)65.925028.1229
family-first (not work-first)65.926528.1307
patriotic (not unpatriotic)65.642621.515
guarded (not open)65.553226.7294
regular (not zany)65.313123.111
unassuming (not pretentious)65.214824.815
mild (not spicy)64.616725.2248
suspicious (not awkward)64.145720.3261
practical (not imaginative)64.043724.9266
thick-skinned (not sensitive)63.931726.5276
socialist (not libertarian)63.83830.6235
🤠 (not 🤑)63.737230.314
traditional (not unorthodox)63.225630.0121
🥰 (not 🙃)63.027034.115
📉 (not 📈)63.010722.77
hoarder (not unprepared)62.636916.3238
armoured (not vulnerable)62.544527.6209
cryptic (not straightforward)62.312628.6296
😏 (not 😬)62.333325.614
🥳 (not 🥴)62.117020.715
trusting (not suspicious)62.023327.7301
happy (not sad)61.919722.1268
🙋‍♂️ (not 🙅‍♂️)61.436330.915
resistant (not resigned)61.059027.5253
reserved (not chatty)60.934725.9289
sheriff (not outlaw)60.635325.6269
concrete (not abstract)60.342137.313
logical (not emotional)60.129525.6329
average (not deviant)60.120726.2183
🐐 (not 🦒)60.145131.712
normal (not weird)59.826125.2343
purple (not orange)59.327927.7207
provincial (not cosmopolitan)59.029832.7217
outsider (not insider)59.037026.9237
🦄 (not 🐴)58.828034.811
statist (not anarchist)58.639426.020
slow (not fast)58.515824.2289
builder (not explorer)58.435328.5328
cool (not dorky)58.445430.914
playful (not shy)58.059421.2283
blue-collar (not ivory-tower)57.640628.6267
soft (not hard)57.334023.4102
conventional (not creative)57.233627.1331
focused on the present (not focused on the future)57.238729.0242
soft (not hard)57.234123.3236
fortunate (not unlucky)57.133826.6263
impartial (not biased)57.09929.0227
cheery (not sorrowful)56.628823.2326
💝 (not 💔)56.638831.415
social (not reclusive)56.444024.619
dominant (not submissive)56.360423.7299
precise (not vague)56.358730.0168
repetitive (not varied)56.352227.0104
basic (not hipster)55.657428.2252
aloof (not obsessed)54.716724.0273
specialist (not generalist)54.357032.190
political (not nonpolitical)54.248832.8267
country-bumpkin (not city-slicker)54.126421.814
passive (not assertive)53.623125.0238
'right-brained' (not 'left-brained')53.522927.2152
conspiracist (not sheeple)53.263024.7201
adventurous (not stick-in-the-mud)52.853926.7216
eastern (not western)52.816923.412
alpha (not beta)52.759125.9219
brave (not careful)52.360126.7332
thick (not thin)52.334420.7159
official (not backdoor)52.338528.8341
strict (not lenient)52.255625.7342
introvert (not extrovert)52.238326.8271
liberal (not conservative)52.159634.117
artistic (not scientific)52.043525.8295
obedient (not rebellious)51.934728.5265
flexible (not rigid)51.737724.4241
multicolored (not monochrome)51.743933.597
meek (not bossy)51.427622.5294
🐩 (not 🐒)51.451530.78
trusting (not charming)51.340629.9314
🧐 (not 😎)51.345835.39
transient (not permanent)51.039231.7142
roundabout (not direct)50.926530.3282
subjective (not objective)50.654129.9100

Similar characters

The similarity between two characters can be calculated by taking the correlation between the lists of their traits. This produces a value from +1 to -1. With +1 implying that every trait one character is high on the other one is high on too, to an equal degree. And, -1 implying that if a character is high on specific trait, the other one is low on it. The 10 most and least similar characters to Derrial Book based on their crowd-sourced profiles are listed below with the correlation in parenthesis.

Most similar Least similar
  1. Obi-Wan Kenobi (0.912)
  2. Alfred Pennyworth (0.872)
  3. Marmee March (0.86)
  4. Francis Mulcahy (0.85)
  5. Donald Mallard (0.847)
  1. Joffrey Baratheon (-0.745)
  2. Ziggy Sobotka (-0.733)
  3. Lisa (-0.696)
  4. Dennis Nedry (-0.69)
  5. Jonah Ryan (-0.683)

Personality types

Personality types according to various systems can be derived from the character's traits. Profiles for a personality type were computed by averaging together all responses from people who took the test and reported a given personality type and then this composite was matched to each of those profiles as if it was its own character (as was done above). Listed closest to worst match.

  1. Jungian/Myers-Briggs: ENTJ (r = 0.5)
  2. Jungian/Myers-Briggs: ESTJ (r = 0.46)
  3. Jungian/Myers-Briggs: ESTP (r = 0.31)
  4. Jungian/Myers-Briggs: ENTP (r = 0.26)
  5. Jungian/Myers-Briggs: ENFJ (r = 0.21)
  6. Jungian/Myers-Briggs: ESFJ (r = 0.17)
  7. Jungian/Myers-Briggs: INTJ (r = 0.16)
  8. Enneagram: Type 8 (r = 0.13)
  9. Jungian/Myers-Briggs: ISTJ (r = 0.1)
  10. Jungian/Myers-Briggs: ESFP (r = 0.07)
  11. Jungian/Myers-Briggs: ENFP (r = 0.05)
  12. Enneagram: Type 1 (r = 0.05)
  13. Enneagram: Type 5 (r = 0.02)
  14. Jungian/Myers-Briggs: ISTP (r = -0.03)
  15. Enneagram: Type 3 (r = -0.07)
  16. Jungian/Myers-Briggs: INFJ (r = -0.1)
  17. Jungian/Myers-Briggs: INTP (r = -0.1)
  18. Enneagram: Type 6 (r = -0.1)
  19. Jungian/Myers-Briggs: ISFJ (r = -0.12)
  20. Enneagram: Type 2 (r = -0.22)
  21. Enneagram: Type 4 (r = -0.22)
  22. Enneagram: Type 7 (r = -0.24)
  23. Enneagram: Type 9 (r = -0.27)
  24. Jungian/Myers-Briggs: INFP (r = -0.31)
  25. Jungian/Myers-Briggs: ISFP (r = -0.31)


  Updated: 05 August 2020
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