I have a few ideas, but it'd be easier if we knew what that character uses Psychology for. For example, I have two characters with respectable psych skills: One is a Psychologist who freelances as a Profiler. He can use Academics: Psychology to compliment a lot of his investigative skills, and to help other group members heal stress during downtime. He might use Academics Psychology to compliment Kinesics when interviewing a suspect, compliment investigation to gain insight into a suspects' motivations, or just use the raw skill when the local law enforcement types cast doubt on his techniques and he needs to win them over. The other is a computer hacker with specialization in Artificial Intelligences. Firewall uses her as a TITAN hunter and her skills help her identify weak points in individual TITAN's psychology that Firewall can exploit. I made the decision on my own that she is so specialized in machine intelligences that she has trouble when dealing with bio intelligences (equiv to real world naiveté). So what does this character do? A face has obvious uses for these skills, but is that all? Why did the character pick up these skills in the first place. Are they a master manipulator that learned Psychology on the fly, experimenting and refining over years of cons? Are they an academic that is forced, for whatever reason, to use their skills to help firewall? Each of those characters is going to use Psychology in different ways and should gain different bonuses based on your own judgment because of that.

If you gave me this character I would make them a motivational speaker who uses his knowledge of human psychology to encourage predatory behavior in the people they work with. Something like "Taking Back Your Lizard Brain for Profit". They could make money giving seminars to wealthy businesspeople who think increasing their "predatory mindset" will help them make even more money. This should give the character a sizable amount of credits to play with as well as a lot of contacts and high C-Rep. In practical terms they should be a fantastic negotiator, especially in regards to corp types. Their Viral Marketing skills can be used to put long term plans into play, ruining the rep of potential enemies and controlling hostile memes and basilisk hacks by deep cover exurgents. That's off the top of my head anyway...

Okay, I can't get this out of my head, so I've decided to inflict it upon you all. So there. "The club is deafening from a block away, neon lights and swirling entoptics calling the cream of transhumanism with the promise of food and mating, an angler's lure blinding the prey to the teeth beneath... Exhuman teeth in this case. And so I went to pull on the lure, to see if I could trick them into trying to bite... The bouncer wanted to turn me away - no pets allowed - but before he even saw me I had him. The tension of his shoulders as he parted the way for the high and mighty spoke of resentment... a Barsoomian sympathiser most likely, but the way he wore his sidearm betrayed his fear of authority, so not an active member. A twitch of a tentacle at a sylph, a roll of the eyes and a flash of red and I was through the door, my new "kindred spirit" wishing me the best for the evening. A corridor lined with silk curtains gave way to a sea of flesh, gracefully sculpted bodies writhing in time to a beat designed to unleash the animal within... ironic really. I looked out with trained eyes at the human ocean, and immediately the currents and waves become apparent... as did the rocks of inhumanity lurking within: figures in the throng disturbing the flow, pretending to belong. Even now their presence was having the desired effect, breaking the harmony of the group and disrupting flows of emotional communication. In about 10 minutes, a brawl was going to break out, in 15 the first deaths, and there they'd be in the middle getting buzzed on the pheromones of fear and rage. At least, that's what they thought. I called up the menu and perused it like a soldier checking his armament, and then I got to work... ...a beer to the Ruster at the back who just lost his job to stop him switching to whiskey... ...a cocktail to the splicer who's new here, to redirect her away from the dealer she was drifting towards and into a group who (judging by their hairstyles) share her interest in nanosculpture... ...a quick twist of a tentacle sends a young woman into stumbling into the arms of another (they'd be married by the end of the week, if I'm any judge), the flash of love rippling through the crowd.... ... a tip of a tentacle dipped into a drink headed to a couple by the dance floor, leaving a drop of Hither... ... inhuman eyes searched for mine as the scent of the club swung away from violence. I let them see what they expect to see - a simple uplift in over his head - and they looked right through me. They knew something was wrong, but they couldn't tell why. It was about to become much, much worse. Time to get this party started...”