Though not explicitly called out in the spell descriptions or magic item descriptions, spells, spell-like abilities, and magic items that could potentially affect psionics do affect psionics and vice versa. However, magic and psionics are different and have difficulty interacting.

• Detect Magic detects the presence of psionic auras, but not the discipline.
• Detect Psionics detects the presence of magic auras, but not the school.
• As specified below, Spellcraft can be used to identify psionic auras, but at a -5 penalty. Using a spell (Detect Magic, Identify, etc.) to detect psionic auras adds an additional -2 penalty to the Spellcraft check.
• As specified below, Psicraft can be used to identify magical auras, but at a -5 penalty. Using a power (Detect Psionics, Psionic Identify) to detect magical auras adds an additional -2 penalty to the Psicraft check.

This penalty is reduced to -3 if a character has ranks in both Psicraft and Spellcraft.

The following skills can be used interchangeably for skill checks, but at a -5 penalty to emulate the opposing skill; if a character has ranks in both skills this penalty is reduced to -3. Ranks in these skills never “stack” and are not interchangeable for other purposes (such as meeting prerequisites for a prestige class):

• Spellcraft and Psicraft
• Use Magic Device and Use Psionic Device
• Knowledge (arcana) and Knowledge (psionics)

Equivalent spells and powers and effects are generally interchangeable; for example, identify and psionic identify can both detect magical or psionic properties, though using the wrong skill to identify an item still imparts the -5 penalty.

• Dispel Magic checks that target psionics are cast at a -4 penalty.
• Dispel Psionics checks that target magic are manifested at a -4 penalty.
• An Antimagic Field has a chance to hinder psionics, and Null Psionics field has a chance to suppress magic; every 1d4 rounds, an opposing effect has a 50% chance to be hindered.
• Creatures with resistance to mind-affecting spells and effects gain resistance to psionic equivalents, and vice-versa.
• Creatures with Spell Resistance gain Power Resistance equal to their one half their Spell Resistance.
• Creatures with Power Resistance gain Spell Resistance equal to their one half their Power Resistance.
• Powers cannot be used to counterspell spells. Likewise, spells cannot counterspell powers.

• 9th level spells cannot be affected (e.g. dispelled, etc.), but can be detected, by psionics. Power Resistance functions against such spells, but the caster level check is made at +4.
• 9th level powers cannot be affected (e.g. dispelled, etc.), but can be detected, by spells. Spell Resistance functions against such powers, but the manifester level check is made at +4.

Feats

Special feats exist for overcoming these restrictions:

Mystical Intuitive
Prerequisites: A power point reserve or access to divine or arcane spells. The primary statistic for the caster or manifester class, that gave access to the requisite spells or power points, of 15 or higher (e.g. 15+ Cha for a sorcerer).
Benefit: When using a skill related to magic to analyze, search for or identify psionics (or visa versa) you suffer none of the usual penalties related to the mis-match between the two.
Normal: See above
Special: Any spell-casting or power-manifesting class that gets a list of available bonus feats may add this feat to the list.

Mystical Savant
Prerequisites: Mystical Intuitive
Benefit: No penalties are applied when attempting to overcome spell resistance with a psionic power or psionic resistance with a magic spell.
Normal: See above
Special: Any spell-casting or power-manifesting class that gets a list of available bonus feats may add this feat to the list.