But otherwise there is n't a big difference between up spikes and down spikes based on age .
Ages 23 and 24 seem somewhat more likely to produce an up spike than a down spike , while ages 33 and 34 are the reverse .
Otherwise there is n't a big difference between up spikes and down spikes based on age .
Ages 23 and 24 seem somewhat more likely to produce an up spike than a down spike , while ages 33 and 34 are the reverse .