[khr]

Power is also a concern that many researchers do not pay attention to (at least in psychology/neuroscience).

If the original study was under-powered, the estimated effect size in that study will be inflated and any replication attempt that uses this inflated effect size estimate will be severely underpowered.

Plus, two independently conducted studies that are both powered at 80% to detect a true effect will both be positive results only 64% of the time (assuming absolutely nothing fishy going on, e.g. p-hacking).