▁is ▁a ▁belief ▁that ▁the ▁mind ▁is ▁a ▁parallel , ▁interactive ▁computer , ▁best ▁studied ▁by ▁experiment ation ▁and ▁computational ▁model ing . ▁ ▁As ▁well ▁as ▁his ▁interest ▁in ▁language ▁and ▁computational ▁model ing , ▁he ▁was ▁also ▁interested ▁in ▁the ▁research ▁of ▁age ing ▁and ▁met ac ogn ition . ▁ ▁He ▁is ▁also ▁interested ▁in ▁the ▁weather , ▁and ▁maintain s ▁a ▁site ▁about ▁severe ▁weather ▁events ▁in ▁Britain ▁and ▁the ▁British ▁weather ▁in ▁general ▁available ▁from ▁tre vor har ley . com , ▁calling ▁this ▁role ▁as ▁a ▁" ps ych om eteor ologist ". ▁He ▁also ▁car ries ▁out ▁psych ological ▁research ▁about ▁the ▁weather , ▁including ▁why ▁are ▁people ▁so ▁interested ▁in ▁the ▁weather ? ▁He ▁maintain s ▁a ▁weather ▁station ▁at ▁Lund ie ▁near ▁D und ee . ▁ ▁He ▁wrote ▁a ▁famous ▁article ▁called ▁Prom ises , ▁Prom ises ▁in ▁which ▁he ▁argued ▁that ▁cogn itive ▁ne uro ps ych olog ists ▁have ▁increasing ly ▁devi ated ▁from ▁the ▁original ▁goals ▁and ▁methods ▁of ▁the ▁subject . ▁ ▁The ▁Psych ology ▁of ▁Language ▁One ▁of ▁Har ley ' s ▁most ▁famous ▁publications ▁is ▁the ▁book ▁The ▁Psych ology ▁of ▁Language . ▁In ▁this ▁book , ▁he ▁discuss es ▁psych ol ingu istics , ▁which ▁is ▁the ▁study ▁of ▁relationships ▁that ▁exist ▁between ▁lingu istic ▁behaviour ▁and ▁psych ological ▁processes . ▁Har ley ▁discuss es ▁both ▁the ▁low ▁cogn itive ▁level ▁processes , ▁including ▁speech ▁and ▁visual ▁word ▁recognition , ▁and ▁the ▁high ▁cogn itive ▁level