Table 7.
Results of the exercise in recognizing the older of the two celebrities (N = 122)*
| Older celebrity | Younger celebrity | Difference (years) | % correct (2–category system: yes/no) | % correct (4–category system: yes/no/ns/b) |
|---|---|---|---|---|
| Roger Federer (32) |
Andy Murray (26) |
6 |
97% |
97% |
| George Clooney (52) |
Brad Pitt (49) |
3 |
95% |
96% |
| David Beckham (38) |
Prince Harry (29) |
11 |
96% |
96% |
| Tiger Woods (37) |
Lewis Hamilton (28) |
11 |
93% |
95% |
| Jennifer Aniston (44) |
Paris Hilton (32) |
12 |
97% |
94% |
| Miley Cyrus (20) |
Justin Bieber (19) |
1 |
93% |
92% |
| Ben Affleck (41) |
Ashton Kutcher (35) |
6 |
85% |
85% |
| George W. Bush (67) |
Tony Blair (60) |
7 |
85% |
80% |
| Kim Kardashian (33) |
Adele (25) |
8 |
82% |
79% |
| Jennifer Lopez (44) |
Britney Spears (31) |
13 |
83% |
78% |
| Angela Merkel (59) |
JK Rowling (48) |
11 |
71% |
73% |
| Michael Jackson (50) |
Elvis Presley (42) |
8 |
75% |
67% |
| Barack Obama (52) |
David Cameron (47) |
5 |
66% |
62% |
| Tom Cruise (51) |
Nicole Kidman (46) |
5 |
64% |
60% |
| Katy Perry (28) |
Rihanna (25) |
3 |
63% |
59% |
| Jay–Z (43) |
Eminem (40) |
3 |
56% |
57% |
| Dustin Hoffman (76) |
Robert de Niro (70) |
6 |
44% |
52% |
| Paul McCartney (71) |
Mick Jagger (70) |
1 |
59% |
52% |
| Madonna (55) |
Susan Boyle (52) |
3 |
55% |
51% |
| Shakira (36) | Beyonce (32) | 4 | 43% | 43% |
*The questions were phrased as: “Would you say that Celebrity X is older than Celebrity Y?”. The possible answers in the first round were “Yes” or “No” (2–category system); and in the second round the students were also allowed “Not sure” (when they were familiar of both celebrities, but it was too difficult to judge) and leaving the answer “Blank” deliberately (when not knowing one or both celebrities), in order to increase the chance of the entire collective of students to answer correctly. The latter type of “scoring” is used in the CHNRI method.