Experimental Design Negative Controls

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  • เผยแพร่เมื่อ 8 พ.ย. 2017
  • Cartoon explaining what negative controls are, for use when you're designing an experiment.
    Please give feedback in comments as to whether this was helpful to you.

ความคิดเห็น • 36

  • @chrismebane2354
    @chrismebane2354 5 ปีที่แล้ว +24

    These are wonderful. Maybe next Control Kitty will ask just how Dr. Johnson assembled all those volunteers for his test. Where they representative or self-selected? A bunch of caffeine habituated javaheads who responded to an ad in the coffee shop? Double blinded to reduce bias? I could see another video on randomization and sampling frames.
    I'm sure David Glass's book goes into all that, but well, I have a shelf full of related books and I'm unlikely to benefit from and want to buy another. Unless maybe he hooks with another clever video or two.
    Go Kitty!

  • @HadithWeekly
    @HadithWeekly 3 ปีที่แล้ว +9

    the cat really pissed off the scientists LOL

  • @BruceWayne-us3kw
    @BruceWayne-us3kw 3 ปีที่แล้ว +15

    My blood pressure rose when he said "prove" the hypothesis.

  • @najatabdulrahim1711
    @najatabdulrahim1711 ปีที่แล้ว +4

    I am aware that negative control (Decaf group) is essential to be tested, however, Kitty needed to mention the importance of testing the blood pressure of the same volunteers before drinking and after drinking the caffeine. Because we are not sure if the volunteers themselves have any health issues. some people might have diabetes, and others might have already high blood pressure during the experiment. we can not confirm our decisions by these basic findings.

  • @maimai-bd2iw
    @maimai-bd2iw ปีที่แล้ว

    I LOVE THIS SO MUCH, I AM SO GRATEFUL FOR YOUR WORK! The animation is so cute

  • @emmasivewrightmd
    @emmasivewrightmd 5 ปีที่แล้ว +7

    These videos are so good! Love control kitty

  • @NinasBasket
    @NinasBasket 2 ปีที่แล้ว +1

    That was just wow thanks alot for this amazing and enlightening video! ♥️👍

  • @eggedstudios278
    @eggedstudios278 ปีที่แล้ว +1

    That cat was wearing the lab coat in that relationship.

  • @iamlethibe
    @iamlethibe ปีที่แล้ว

    Amazing! Thank you!

  • @douglasheinl250
    @douglasheinl250 2 ปีที่แล้ว

    Great video, thank you.

  • @hivavlogs3255
    @hivavlogs3255 4 ปีที่แล้ว +1

    Thank you! This helped

  • @jessicazhang7189
    @jessicazhang7189 3 ปีที่แล้ว +5

    A quick question: If we only want to see the effect of caffeine on the subjects, isn't it sufficient to just let the volunteers drink coffee and decaf coffee? If drinking fluid has an effect, for example, then it would be affecting both groups anyway

  • @haileym1472
    @haileym1472 4 ปีที่แล้ว +1

    thank you !!! Very NICE!!!!! ;)

  • @jasonsalvador6243
    @jasonsalvador6243 3 ปีที่แล้ว

    COOL!

  • @dsdskdkw6354
    @dsdskdkw6354 5 ปีที่แล้ว +5

    the marker sounsd made me grit my teeth x d

  • @BradyJ1204
    @BradyJ1204 5 ปีที่แล้ว +2

    awesome

  • @user-ul9fz7kn2z
    @user-ul9fz7kn2z 3 ปีที่แล้ว +4

    I hate the marker squeaking noise :(

  • @vigneshkumar8210
    @vigneshkumar8210 2 ปีที่แล้ว

    Wonderful

  • @UnknownvV
    @UnknownvV 2 ปีที่แล้ว

    What would the positive and negative control be on the experiment of plant on window sill will grow 3cm vs plant in middle of living room. I am stumped

  • @jiminkeelh3247
    @jiminkeelh3247 ปีที่แล้ว

    thank you so much!! I have a scientific paper homework that I need to do huhuu

  • @centerforanimalecology268
    @centerforanimalecology268 5 ปีที่แล้ว +1

    Learning with enjoy

  • @devinleung3162
    @devinleung3162 3 ปีที่แล้ว +5

    Hello Mrs. Morrisey, What is our assignment due 10/12

    • @confusedsteak4570
      @confusedsteak4570 3 ปีที่แล้ว +1

      This is Mr.Vega and I am also quite confused with the 10/12 assignment, Mrs.Morrissey

  • @hannahjamison7223
    @hannahjamison7223 2 ปีที่แล้ว

    cramming the night before the ap exam😍

  • @bryt1040
    @bryt1040 4 ปีที่แล้ว

    What kind of negative control would the water be?

    • @mysteryman595
      @mysteryman595 4 ปีที่แล้ว +1

      It shows that the changes in blood pressure are due to general fluid consumption, not specifically coffee

    • @bryt1040
      @bryt1040 4 ปีที่แล้ว +1

      Jupjeet Sandhu thank you!!

  • @astaganaga1906
    @astaganaga1906 2 ปีที่แล้ว

    The cat’s so woke

  • @yujinan9329
    @yujinan9329 3 ปีที่แล้ว +1

    고양이 똑똑하네

    • @experimentaldesignforbiolo2848
      @experimentaldesignforbiolo2848  3 ปีที่แล้ว

      예, 고양이는 확실히 하루를 구하고 있습니다.

    • @HadithWeekly
      @HadithWeekly 3 ปีที่แล้ว

      @@experimentaldesignforbiolo2848 고양이는 과학자에게 정말 화가 나

    • @experimentaldesignforbiolo2848
      @experimentaldesignforbiolo2848  3 ปีที่แล้ว

      @@HadithWeekly 과학자는 Kontrol Kitty의 말을 들어야합니다

    • @HadithWeekly
      @HadithWeekly 3 ปีที่แล้ว

      @@experimentaldesignforbiolo2848 예

  • @sccm100
    @sccm100 3 ปีที่แล้ว +2

    that marker sounds horrible

  • @JosephReilly-jx9zc
    @JosephReilly-jx9zc 9 หลายเดือนก่อน +1

    dude quit adding the marker scraping sound effect it makes your videos unwatchable