• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Experiment to test touch sensing in boys and girls

Extracts from this document...


´╗┐Barbara Marban P. 8 27/03/21012 What is the reception difference in touch sensory neurons between boys and girls? Question: Are males as effective as males in the recognition of Styrofoam letters? Purpose: The purpose of this experiment was to understand the behavioral differences between genders in 5 and 6 year olds when they were exposed to different tactile objects. Hypothesis: If both genders are exposed to the same tactile objects, then females will be faster at correctly identifying the letters proposed. Background: There are many sensory neurons in the skin which serve to indicate, pain, temperature (hot and cold), touch and pressure. The sensory neuron relevant for this experiment is located between the epidermis and the dermis and is second farthest from the surface of the skin, the farthest being pressure. The closest neurons are those that indicate for pain, hotness and coldness. Controls and Variables: Independent Variable: - Styrofoam letters presented to the students hidden inside the box. Dependent Variable: - The number of letters each gender got correct. - The time it took each gender to try to guess the letter they were feeling. ...read more.


*Uncertainty calculated to +/-1 instead of +/-0.1 in regard of the possible human error. Sample Average Calculation: 5+4+2+5+4+8+7+12+15+4+10+5+10+12+26+5+15+6+9=185 163/19=8.6 Average=8.6 +/- 1 seconds Number of guessed letters that were correct for both boys and girls** Student Boys Girls 1 1 0 2 1 1 3 0 0 4 0 0 5 1 1 6 1 1 7 1 1 8 1 0 9 0 1 10 1 1 11 0 0 12 1 1 13 0 1 14 0 1 15 0 1 16 0 1 17 0 0 18 1 1 19 1 1 Total 10 13 **No Uncertainty because there was no possibility for error. **No Uncertainty because there was no possibility for error. Sample Total Calculation: 1+1+0+0+1+1+1+1+0+1+0+1+0+0+0+0+0+1+1=10 Total answers correct=10 Qualitative data Boy Girls Boys cheer so that their teammates guess faster. Say a letter immediately after putting their hand in. Some repeat the letter the person behind them said even though it is not their letter. Cheer for the correct answer, ?what is it.? Not impatient Think about what they are going to say. ...read more.


Another possible error was how the time was calculated with the stopwatches. There was only one person for two stopwatches, therefore the uncertainty was changed to +/- 1 because taking into consideration the time it takes the child to say the word, your brain to interpret that information and then stop the time a second could easily go by. If both children ended at similar times, it is possible that the stopwatch was stopped at a later time. To improve the lab we should perform a parallel lab in which the only dependent variable is the number of letters correct. Through this we would be able to determine if the time of analysation affected the number of correct guesses and if under pressure, boys or girls were better at identifying the letter. Another change that could be preformed would be to increase the number of students that were experimented upon. This would increase the range of data and its accuracy. The final possible change that could be done would be to have more that one person calculating the time so that the possible human error would decrease from +/-1 to +/- 0.1. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Biology essays

  1. Marked by a teacher

    Neurology and Behaviour. Focus question: Is there an increase in the perception and ...

    5 star(s)

    Overall it was found that women rated higher for dangerous images just as picture number eleven, which was that of a hook worm sticking out of a man's finger. Despite this it was found that men rated higher in regards to the tape worm.

  2. Ecology Open Investigation Does the geographic location affect the biotic and abiotic ...

    From using the ration of 3:2 - accepted : rejected null hypothesis, statistics show there is a slight difference between the oxygen levels and temperature of Brown Lake and 18 Mile Swamp. There were two abiotic factors that rejected the Null Hypothesis and three factors which were turbidity, pH level and nitrates that accepted the Null Hypothesis.

  1. Reaction Time

    are constantly carried out. Looking at these brief introductions to the different sports we can try to group them into different categories. The most relevant grouping seems to be: Sports Including Reaction Time Drills (SIRTD), Sports Not Including Reaction Time Drills (SNIRTD)

  2. Extended Essay: An Investigation Into the Differences In Life Expectancy For Males and Females ...

    I will walk along the paths which surround these areas and will record data from every other gravestone which is situated next to the path. Results Time Period Males / Females Life expectancy (Years) 1900-1920 Males 70 68 52 36 74 63 39 35 76 53 49 5 18

  1. LAB-What infuences blood pressure

    153 89 152 84 76 + 65,5 169 74 136 83 135 80 77 + 78,6 170 79 + 110 80 110 80 78 + 53,4 160 70 + 115 70 115 70 79 + 53,8 165 63 105 65 105 65 80 + 60 164 70 110 70 110

  2. The effect of pvc piping on the breathing/heart rates of male year 12 students

    Time between different lengths of tubing. Controlled variable To ensure that heart rate returns to normal after tubing induced breathing subjects will be given one minute to rest. Age Controlled variable Year 12 students age 16-17 Personal conditions Uncontrolled variable Multiple factors such as weight, health and stress can affect both heart and breathing rates.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work