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These are clearly preinstruction results. Moreover, the item analysis strongly suggests that these students have had no previous instruction at any level in the physics concept of "force."/snip/
John Mallinckrodt
Cal Poly Pomona
On Aug 24, 2009, at 8:11 AM, Thomas O'Neill wrote:
Jane,
I gave the FCI to 72 students last week and the mean score was 6.2 with a std. dev of 3.1. The item analysis was shown below
1 39
2 13
3 15
4 5
5 5
6 31
7 24
8 12
9 27
10 7
11 2
12 43
13 5
14 17
15 5
16 24
17 3
18 1
19 22
20 3
21 21
22 13
23 15
24 35
25 2
26 2
27 28
28 9
29 8
30 4
Where the first number is the question and the second number is the number of correct answers out of 72.From: jane.jackson@asu.edu (Jane Jackson) /snip/
The Force Concept Inventory (1995 revision -- I. Halloun, R.R. Hake, E.P. Mosca, and D. Hestenes) is available (as.pdf) to educators Visit <http://modeling.asu.edu> and click on "Research and Evaluation".