SLEEPSTUDY (Reaction times in a sleep deprivation study) Data: Reaction Days Subject 1 249.5600 0 308 2 258.7047 1 308 3 250.8006 2 308 4 321.4398 3 308 5 356.8519 4 308 6 414.6901 5 308 7 382.2038 6 308 8 290.1486 7 308 9 430.5853 8 308 10 466.3535 9 308 11 222.7339 0 309 12 205.2658 1 309 13 202.9778 2 309 14 204.7070 3 309 15 207.7161 4 309 16 215.9618 5 309 17 213.6303 6 309 18 217.7272 7 309 19 224.2957 8 309 20 237.3142 9 309 21 199.0539 0 310 22 194.3322 1 310 23 234.3200 2 310 24 232.8416 3 310 25 229.3074 4 310 26 220.4579 5 310 27 235.4208 6 310 28 255.7511 7 310 29 261.0125 8 310 30 247.5153 9 310 31 321.5426 0 330 32 300.4002 1 330 33 283.8565 2 330 34 285.1330 3 330 35 285.7973 4 330 36 297.5855 5 330 37 280.2396 6 330 38 318.2613 7 330 39 305.3495 8 330 40 354.0487 9 330 41 287.6079 0 331 42 285.0000 1 331 43 301.8206 2 331 44 320.1153 3 331 45 316.2773 4 331 46 293.3187 5 331 47 290.0750 6 331 48 334.8177 7 331 49 293.7469 8 331 50 371.5811 9 331 51 234.8606 0 332 52 242.8118 1 332 53 272.9613 2 332 54 309.7688 3 332 55 317.4629 4 332 56 309.9976 5 332 57 454.1619 6 332 58 346.8311 7 332 59 330.3003 8 332 60 253.8644 9 332 61 283.8424 0 333 62 289.5550 1 333 63 276.7693 2 333 64 299.8097 3 333 65 297.1710 4 333 66 338.1665 5 333 67 332.0265 6 333 68 348.8399 7 333 69 333.3600 8 333 70 362.0428 9 333 71 265.4731 0 334 72 276.2012 1 334 73 243.3647 2 334 74 254.6723 3 334 75 279.0244 4 334 76 284.1912 5 334 77 305.5248 6 334 78 331.5229 7 334 79 335.7469 8 334 80 377.2990 9 334 81 241.6083 0 335 82 273.9472 1 335 83 254.4907 2 335 84 270.8021 3 335 85 251.4519 4 335 86 254.6362 5 335 87 245.4523 6 335 88 235.3110 7 335 89 235.7541 8 335 90 237.2466 9 335 91 312.3666 0 337 92 313.8058 1 337 93 291.6112 2 337 94 346.1222 3 337 95 365.7324 4 337 96 391.8385 5 337 97 404.2601 6 337 98 416.6923 7 337 99 455.8643 8 337 100 458.9167 9 337 101 236.1032 0 349 102 230.3167 1 349 103 238.9256 2 349 104 254.9220 3 349 105 250.7103 4 349 106 269.7744 5 349 107 281.5648 6 349 108 308.1020 7 349 109 336.2806 8 349 110 351.6451 9 349 111 256.2968 0 350 112 243.4543 1 350 113 256.2046 2 350 114 255.5271 3 350 115 268.9165 4 350 116 329.7247 5 350 117 379.4445 6 350 118 362.9184 7 350 119 394.4872 8 350 120 389.0527 9 350 121 250.5265 0 351 122 300.0576 1 351 123 269.8939 2 351 124 280.5891 3 351 125 271.8274 4 351 126 304.6336 5 351 127 287.7466 6 351 128 266.5955 7 351 129 321.5418 8 351 130 347.5655 9 351 131 221.6771 0 352 132 298.1939 1 352 133 326.8785 2 352 134 346.8555 3 352 135 348.7402 4 352 136 352.8287 5 352 137 354.4266 6 352 138 360.4326 7 352 139 375.6406 8 352 140 388.5417 9 352 141 271.9235 0 369 142 268.4369 1 369 143 257.2424 2 369 144 277.6566 3 369 145 314.8222 4 369 146 317.2135 5 369 147 298.1353 6 369 148 348.1229 7 369 149 340.2800 8 369 150 366.5131 9 369 151 225.2640 0 370 152 234.5235 1 370 153 238.9008 2 370 154 240.4730 3 370 155 267.5373 4 370 156 344.1937 5 370 157 281.1481 6 370 158 347.5855 7 370 159 365.1630 8 370 160 372.2288 9 370 161 269.8804 0 371 162 272.4428 1 371 163 277.8989 2 371 164 281.7895 3 371 165 279.1705 4 371 166 284.5120 5 371 167 259.2658 6 371 168 304.6306 7 371 169 350.7807 8 371 170 369.4692 9 371 171 269.4117 0 372 172 273.4740 1 372 173 297.5968 2 372 174 310.6316 3 372 175 287.1726 4 372 176 329.6076 5 372 177 334.4818 6 372 178 343.2199 7 372 179 369.1417 8 372 180 364.1236 9 372 Description: The average reaction time per day for subjects in a sleep deprivation study. On day 0 the subjects had their normal amount of sleep. Starting that night they were restricted to 3 hours of sleep per night. The observations represent the average reaction time on a series of tests given each day to each subject. Format: A data frame with 180 observations on the following 3 variables. Reaction - Average reaction time (ms) Days - Number of days of sleep deprivation Subject - Subject number on which the observation was made. Details: These data are from the study described in Belenky et al. (2003), for the sleep-deprived group and for the first 10 days of the study, up to the recovery period. References: Gregory Belenky, Nancy J. Wesensten, David R. Thorne, Maria L. Thomas, Helen C. Sing, Daniel P. Redmond, Michael B. Russo and Thomas J. Balkin (2003) Patterns of performance degradation and restoration during sleep restriction and subsequent recovery: a sleep dose-response study. Journal of Sleep Research 12, 1–12. Task: Model the average reaction time.