sai: State Anxiety data from the PMC lab over multiple occasions.

Description

State Anxiety was measured two-three times in 11 studies at the Personality-Motivation-Cognition laboratory. Here are item responses for 11 studies (9 repeated twice, 2 repeated three times). In all studies, the first occasion was before a manipulation. In some studies, caffeine, or movies or incentives were then given to some of the participants before the second and third STAI was given. In addition, Trait measures are available and included in the tai data set (3032 subjects).

Usage

data(sai)
data(tai)
data(sai.dictionary)

Arguments

Format

A data frame with 3032 unique observations on the following 23 variables.

id: a numeric vector
study: a factor with levels ages cart fast fiat film flat home pat rob salt shedshop xray
time: 1=First, 2 = Second, 3=third administration
TOD: TOD (time of day 1= 8:50-9:30 am,2 = 1=3 pm, 3= 7:-8pm
drug: drug (placebo (0) vs. caffeine (1))
film: film (1=Frontline (concentration camp), 2 = Halloween 3= National Geographic (control), 4- Parenthood (humor)
anxious: anxious
at.ease: at ease
calm: calm
comfortable: comfortable
confident: confident
content: content
high.strung: high.strung
jittery: jittery
joyful: joyful
nervous: nervous
pleasant: pleasant
rattled: over-excited and rattled
regretful: regretful
relaxed: relaxed
rested: rested
secure: secure
tense: tense
upset: upset
worried: worried
worrying: worrying

Details

The standard experimental study at the Personality, Motivation and Cognition (PMC) laboratory (Revelle and Anderson, 1997) was to administer a number of personality trait and state measures (e.g. the epi, msq, msqR and sai) to participants before some experimental manipulation of arousal/effort/anxiety. Following the manipulation (with a 30 minute delay if giving caffeine/placebo), some performance task was given, followed once again by measures of state arousal/effort/anxiety.

Here are the item level data on the sai (state anxiety) and the tai (trait anxiety). Scores on these scales may be found using the scoring keys. The affect data set includes pre and post scores for two studies (flat and maps) which manipulated state by using four types of movies.

In addition to being useful for studies of motivational state, these studies provide examples of test-retest and alternate form reliabilities. Given that 10 items overlap with the msqR data, they also allow for a comparison of immediate duplication of items with 30 minute delays.

Studies CART, FAST, SHED, RAFT, and SHOP were either control groups, or did not experimentally vary arousal/effort/anxiety.

AGES, CITY, EMIT, RIM, SALT, and XRAY were caffeine manipulations between time 1 and 2 (RIM and VALE were repeated day 1 and day 2)

FIAT, FLAT, MAPS, MIXX, and THRU were 1 day studies with film manipulation between time 1 and time 2.

SAM1 and SAM2 were the first and second day of a two day study. The STAI was given once per day. MSQ not MSQR was given.

VALE and PAT were two day studies with the STAI given pre and post on both days

RIM was a two day study with the STAI and MSQ given once per day.

Usually, time of day 1 = 8:50-9am am, and 2 = 7:30 pm, however, in rob, with paid subjects, the times were 0530 and 22:30.

References

Charles D. Spielberger and Richard L. Gorsuch and R. E. Lushene, (1970) Manual for the State-Trait Anxiety Inventory.

Revelle, William and Anderson, Kristen Joan (1997) Personality, motivation and cognitive performance: Final report to the Army Research Institute on contract MDA 903-93-K-0008

Rafaeli, Eshkol and Revelle, William (2006), A premature consensus: Are happiness and sadness truly opposite affects? Motivation and Emotion, 30, 1, 1-12.

Smillie, Luke D. and Cooper, Andrew and Wilt, Joshua and Revelle, William (2012) Do Extraverts Get More Bang for the Buck? Refining the Affective-Reactivity Hypothesis of Extraversion. Journal of Personality and Social Psychology, 103 (2), 206-326.

Examples

Run this code

data(sai)

table(sai$study,sai$time)  #show the counts for repeated measures

#Here are the keys to score the sai total score, positive and negative items
sai.keys <- list(sai = c("tense","regretful" , "upset", "worrying", "anxious", "nervous" ,  
"jittery" , "high.strung", "worried" , "rattled","-calm", 
"-secure","-at.ease","-rested","-comfortable", "-confident" ,"-relaxed" , "-content" , 
"-joyful", "-pleasant"  ) ,
sai.p = c("calm","at.ease","rested","comfortable", "confident", "secure" ,"relaxed" ,     
       "content" , "joyful", "pleasant" ),  
sai.n = c( "tense" , "anxious", "nervous" , "jittery" , "rattled",     "high.strung",  
         "upset", "worrying","worried","regretful" )
) 
tai.keys <- list(tai=c("-pleasant" ,"nervous" , "not.satisfied", "wish.happy",
   "failure","-rested", "-calm", "difficulties" , "worry" , "-happy" , 
   "disturbing.thoughts","lack.self.confidence",
   "-secure", "decisive" , "inadequate","-content","thoughts.bother","disappointments" ,    
   "-steady" , "tension"  ),
   tai.pos = c("pleasant", "-wish.happy", "rested","calm","happy" ,"secure",
   "content","steady" ),
   tai.neg = c("nervous", "not.satisfied", "failure","difficulties", "worry", 
    "disturbing.thoughts" ,"lack.self.confidence","decisive","inadequate" , 
    "thoughts.bother","disappointments","tension" )         )


#using the is.element function instead of the %in% function 
#just get the control subjects 
control <- subset(sai,is.element(sai$study,c("Cart", "Fast", "SHED", "RAFT", "SHOP")) )

#pre and post drug studies
drug <- subset(sai,is.element(sai$study, c("AGES","CITY","EMIT","SALT","VALE","XRAY"))) 

#pre and post film studies
film <- subset(sai,is.element(sai$study, c("FIAT","FLAT", "MAPS", "MIXX") ))

#this next set allows us to score those sai items that overlap with the msq item sets
msq.items <- c("anxious", "at.ease" ,"calm", "confident","content", "jittery", 
 "nervous" ,  "relaxed" ,  "tense"  ,  "upset" ) #these overlap with the msq
 
sai.msq.keys <- list(pos =c( "at.ease" ,  "calm" , "confident", "content","relaxed"),
  neg = c("anxious", "jittery", "nervous" ,"tense"  ,   "upset"),
  anx = c("anxious", "jittery", "nervous" ,"tense", "upset","-at.ease" ,  "-calm" ,
  "-confident", "-content","-relaxed"))
sai.not.msq.keys <- list(pos=c(  "secure","rested","comfortable" ,"joyful" , "pleasant" ),    
    neg=c("regretful","worrying", "high.strung","worried", "rattled" ),
    anx = c("regretful","worrying", "high.strung","worried", "rattled",     "-secure",      
    "-rested", "-comfortable", "-joyful",  "-pleasant" )) 
sai.alternate.forms <- list( pos1 =c( "at.ease","calm","confident","content","relaxed"),
  neg1 = c("anxious", "jittery", "nervous" ,"tense"  ,   "upset"),
  anx1 = c("anxious", "jittery", "nervous" ,"tense", "upset","-at.ease" ,  "-calm" ,
       "-confident", "-content","-relaxed"),
  pos2=c(  "secure","rested","comfortable" ,"joyful" , "pleasant" ),    
  neg2=c("regretful","worrying", "high.strung","worried", "rattled" ),
  anx2 = c("regretful","worrying", "high.strung","worried", "rattled", "-secure",      
    "-rested", "-comfortable", "-joyful",  "-pleasant" )) 
  
sai.repeated <- c("AGES","Cart","Fast","FIAT","FILM","FLAT","HOME","PAT","RIM","SALT",
    "SAM","SHED","SHOP","VALE","XRAY")
sai12 <- subset(sai,is.element(sai$study,  sai.repeated)) #the subset with repeated measures

#Choose those studies with repeated measures by :
sai.control <- subset(sai,is.element(sai$study, c("Cart", "Fast", "SHED", "SHOP")))
sai.film <- subset(sai,is.element(sai$study, c("FIAT","FLAT") )  )
sai.drug <- subset(sai,is.element(sai$study, c("AGES",  "SALT", "VALE", "XRAY")))
sai.day <- subset(sai,is.element(sai$study, c("SAM", "RIM")))

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