|Bonus Attribute:||At creation, the charater gets a +2 bonus to an attribute of their choice.|
|Keen Senses:||Half-Elves receive a +2 racial bonus on Perception checks.|
|Elven Immunities:||Elves are immune to magic sleep effects and gain a +2 racial saving throw bonus against enchantment spells and effects.|
|Adaptability:||Half-elves receive Skill Focus as a bonus feat at 1st level.|
The Half-Elf is fittingly something of a mix between the human and elf, having the human's player-chosen attribute boost, mixed with the elven Keen Senses and immunity to sleep and resistance to enchantments. That said, the extra skill point per level the human gets is superior to the half-elven "Adaptability" racial trait, nor do they possess the Elven Magic, natural Intelligence bonus and Elven Weapon Familiarity that make elves arguably superior Alchemists and Wizards.
On the whole, half-elves lack a human's versatility and don't have enough of the racial traits that made elves interesting as Intelligence-based classes. This doesn't stop them from making fine Rangers and Rogues, however - roles where their Keen Senses and Elven Immunities will come in quite handy.