This page has two analyses that provide extra detail.
The
first about the triplets and performance across them, and the second is about
the videos, and which triplets are covered in each video.
Detailed
analysis of the 20 questions in the homework, and how there were 5 key triplets
of questions. You can call see from this table the percent correct across the
three items in each triplet. You see a
generally flat trajectory in the control group, and learning in the
control. Triplet 4 is one notable
exception that does not seem to show learning in the experimental group. We can only speculate, but it might be caused
by some proactive interference from them
learning on triplet 3 that then interference with learning on triplet 4. But this is conjecture.
Triplet 
Content and Example 
HW Ques. #s 
% Correct in Control 
% Correct in Expr 
1 
Multiplying powers with like bases: (3^{3})(3^{2}) 
4, 5, 6 
61,61,66 
27,61,84 
2 
Multiplying powers with variable bases and
coefficients:(3x^{4})(2x^{2}) 
8, 9, 10 
55,55,39 
39,68,45 
3 
Dividing powers with like bases:(6^{5})/(6^{7}) 
11, 12, 13 
36,42,45 
23,58,87 
4 
Dividing powers with variable bases and
coefficients:(2y^{9})/(8y^{3}) 
14, 15, 16 
48,21,52 
16,3,23 
5 
Dividing powers with multiple variable bases:(x^{4}y^{2})/(x^{8}y^{3}) 
17, 18, 19 
73,73,72 
58,77,94 
Additional Questions 
Rewriting negative exponents using only positive
exponents: Rewrite 4^{3} using only positive exponents. 
1, 2, 3 
100,100,100 
90,100,100 
Challenge Questions for ecological validity not
tested 
Exponent= 0 121^{0} Dividing powers with multiple variable bases where
an exponent is 1 (x^{2}y)/(x^{12}y^{7}) 
7 20 
67 56 
71 70 
The
following table show which questions were review from each video.
Condition 
Time Spent 
Question Numbers Reviewed 
Triplets Addressed 
YouTube URL (links are easier
to browse from here http://web.cs.wpi.edu/~nth/PublicScienceArchive/Analysis.htm) 
Order Number on Film 
Control 
6 min
49 sec 
15,
17, 15 
4, 5,
4 
http://www.youtube.com/watch?feature=player_embedded&v=tBhcuCnKVCY

48 
Control 
5 min
42 sec 
8, 4 
2, 1 
50 

Control

9 min
27 sec 
7, 11,
10, 15, 14, 16, 8 
3, 2, 4, 4, 4, 2 
52 

Exper. 
5 min
52 sec 
4, 10,
14, 15 
1, 2,
4, 4 
49 

Exper. 
9 min
30 sec 
4, 10,
14, 15, 16 
1, 2,
4, 4, 4 
51 

Exper. 
9 min
26 sec 
4, 10,
14, 15, 12 
1, 2,
4, 4, 3 
53 
Kelly
(2012).