Healthy Living for Children in Schools Throughout America
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Healthy Living for Children in Schools Throughout America Let’s Put An End to Childhood Obesity Midterm Project and Presentation Action Research Project Michelle Morales EDUC 7201 T Fall 2012
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Healthy Living for Children in Schools Throughout America. Let’s Put An End to Childhood Obesity Midterm Project and Presentation Action Research Project Michelle Morales EDUC 7201 T Fall 2012. Table of Contents. Slide 3- Research Design Slide 4-Threats to Internal Validity - PowerPoint PPT Presentation
Transcript of Healthy Living for Children in Schools Throughout America
Healthy Living for Children in Schools Throughout America
Let’s Put An End to Childhood ObesityMidterm Project and Presentation
Action Research ProjectMichelle Morales
EDUC 7201 TFall 2012
Table of Contents
• Slide 3- Research Design• Slide 4-Threats to Internal Validity• Slide 5- Threats to External Validity• Slide 6-Data• Slide 7- Weight Before And After Intervention Graph• Slide 8-Data• Slide 9-Test Grades on the Food Pyramid Before and After
Intervention Graph• Slide 10-Correaltion graph-Intervention vs. Playing in Gym• Slide 11-Correaltion graph-Junk Food vs. Report Card Grades• Slide 12- References
Research Design
• The pre-experimental design I am going to implement for my research is One-Group Pretest-Posttest Design. The symbolic design for this research is OXO, this mean that a single group will be pretested (O), exposed to a treatment (X), and then post-tested (O).
Threats to Internal Validity • History- This can be a threat because once the child leaves the classroom there is no
control what happens at home or at the park or elsewhere.
• Maturation- This is a threat to my study because I am working with the middle school population and they are growing rapidly. Over a four week span I can see some of them gaining weight not necessarily because of what they are eating or not eating but because of the changes and growth going on in their body.
• Testing/ Pre-test Sensitization- I can see this being a threat with my students because if they see a similar test/survey for the second time they may not take it seriously.
• Statistical Regression- this might be a threat considering the participants are all different and are at different physical levels.
• Differential Selection of Subject- This is a threat because my subjects are growing at a rapid pace and they will be physically different as well as mentally different from the start to the end.
• Selection- Maturation Interaction- Yes this poses as a threat because my results may be skewed due to the different growing rates especially amongst the boys.
Threats to External Validity• Generalizable Conditions- I think that this can be a threat because the same
project can be duplicated and there may be different results. • Selection- Treatment Interaction- This is a major threat because my subjects are
not random. They are all in special Ed, in the same school same class and same grade. If the selection was more random I think the results would be more reliable.
• Specificity of Variables- I will try my hardest not to make this a threat and will try to make my variables operate as efficiently as possible.
• Experimenter Effects- I think this will be a threat because the participants may have prior knowledge about the food pyramid or what obesity is.
• Reactive Arrangements/ Participants Effects- I think this can be a threat because the children can lie on the post survey because of the placebo effect of because they feel the need to impress me and showed that they learned something.
Pre-Intervention/Post Intervention Data
Weight Pre Intervention Weight Post Intervention
Student A 83 81
Student B 100 96
Student C 81 84
Student D 115 115
Student E 145 135
Student F 98 92
Student G 135 128
Mean 108.1428571 104.4285714
Weight Before And After Intervention
Student A
Student B
Student C
Student D
Student E
Student F
Student G
Mean
0
20
40
60
80
100
120
140
160
Weight Pre Intervention Weight Post Intervention
Students
Weight
Pre-Intervention/Post Intervention Data
Test Grade Pre Intervention Test Grade Post Intervention
Student A 55 85
Student B 61 72
Student C 78 81
Student D 33 65
Student E 52 97
Student F 87 88
Student G 49 46
Mean 59.28571429 76.28571429
Test Grades on the Food Pyramid Before and After Intervention
Student A
Student B
Student C
Student D
Student E
Student F
Student G
Mean
0
20
40
60
80
100
120
Test Grade Pre Interven-tionTest Grade Post Interven-tion
Students
Test Scores
Intervention vs. Playing in Gym
2 3 4 5 6 7 8 9 100
1
2
3
4
5
6
7
8
9
10
Number of Children Playing in Gym
Num
ber o
f Chi
ldre
n Re
ceiv
ing
Inte
rven
-tio
n
Y=# of children receiving interven-tionX=# of children playing in gym
Junk Food vs. Report Card Grades
2 3 4 5 6 7 8 90123456789
10
Low Report Card Grades
Num
ber o
f Chi
ldre
n w
ho E
at Ju
nk
Food
Y=# of Children Who Eat Junk FoodX= Low Report Card Grades
References
• O’Connor-Petruso, S. (2013). Descriptive Statistics Threats to Validity [PowerPoint slides].Retrieved from https://bbhosted.cuny.edu/webapps/portal/frameset.jsp?tab_tab_group_id=_50_1&url=%2Fwebapps%2Fblackboard%2Fexecute%2Flauncher%3Ftype%3DCourse%26id%3D_829166_1%26url%3D
