ISU580 HW11

(Cooltext significantly better on performance, t(11)=2.7, p<.05, approaching significance on greater satisfaction, t(11)=1.9, p=.084 (n.s.). Table 8-5 in Aron indicates that 26x2=52 participants will be needed - taking into account 10% attrition, a total of 58 participants will need to be recruited.)

1119 – Awesome (though the power table figures are per group x 2).. A

1186 -

1363 - Part 1: Good discussion of some human subjects issues, but missing informed consent. Good thought to use double blind, but may be hard to pull off with commercial software. Part 2: perfect. A

1473 – Part 1: Good. Satisfaction measure type is interval. Need to incorporate retention rate into recruitment needs. Part 2: perfect. A

1985 -

2010 – Part 1: Where did the 14 subjects come from (missing power analysis)? Good discussion of some human subjects issue, but should also include informed consent. Part 2: Results not in publication format. Satisfaction not quite significant. B+

4382 – Part 1: Should use the term 'informed consent' rather than 'waiver' (the latter may make people think they are giving up some rights, whereas the puspose is to tell them what their rights are). Need to incorporate retention rate into recruitment needs. Power analysis seems a little off. Part2: perfect. A-

6611 –

7975 - Part 1: Nice, but missing power analysis. Need to incorporate retention rate into recruitment needs. Study will take 8 weeks (at least), not 8 months. No mention of informed consent. No mention of 'between subjects experiment'. Protocol could use a little more detail. No analysis plan. Part 2: Missing t-tests. B-

8017 –

8424 –