Experiment Code:
Per_Easy
Per_Hard

Number of files per participant:
4

Data File Names:
Per_Easy_SCR_Px (where x = participant number)
Per_Easy_EXP_Px (where x = participant number)
Per_Easy_Seq1_Px (where x = participant number)
Per_Easy_Seq2_Px (where x = participant number)

Per_Hard_SCR_Px (where x = participant number)
Per_Hard_EXP_Px (where x = participant number)
Per_Hard_Seq1_Px (where x = participant number)
Per_Hard_Seq2_Px (where x = participant number)

Description:
4 data files separately for each participant that contain trial by trial information on changes in SCR that occurred in this session, what expectancy (EXP) ratings were made in this session, as well as the sequence of trials the participants saw (Seq1 = block1, Seq2 = block2). Raw data. 

Number of total files under extension:
Per_Easy: 84 
Per_Hard: 112

Number of rows:
Per_Easy_SCR_Px: 69
Per_Easy_EXP_Px: 23
Per_Easy_Seq1_Px: 23
Per_Easy_Seq2_Px: 23

Number of columns:
Per_Easy_SCR_Px: 4
Per_Easy_EXP_Px: 2
Per_Easy_Seq1_Px: 2
Per_Easy_Seq2_Px: 2

1)  Per_Easy_SCR_Px/ Per_Hard_SCR_Px

ROW DATA

Row #: 1-69
Description: Each three rows represent one trial. There are 23 trials in a block and so 69 rows in total. 
Data type: Each row contains the data for each component of a trial, the column gives details of what is recorded for each component.

COLUMN DATA

Column #: 1
Name: SCR 
Description: Average SCR for that component of a trial. 
Note: This data is all from block 1

Colum #: 2
Name: Component identifier
Description: Component identifier for that trial. 3 measurements were taken in each trial. 
Labels: Pre CS+ (1) = 5 seconds prior to CS presentation on a CS+ trial (i.e. CS-US), CS+ (16) = 5 seconds of CS presentation on a CS+ trial, Post CS+ (8) = 5 seconds post CS presentation on a CS+ trial. Pre CS- (2) = 5 seconds prior to CS presentation on a CS- trial (i.e. CS-noUS), CS- (32) = 5 seconds of CS presentation on a CS- trial, Post CS- (4) = 5 seconds post CS presentation on a CS- trial. 
Note: This data is all from block 1.

Column #: 3
Name: SCR
Description: Average SCR for that component of a trial.
Note: This data is all from block 2

Column #: 4
Name: Component identifier
Description: Component identifier for that trial. 3 measurements were taken in each trial. 
Labels: Pre CS+ (1) = 5 seconds prior to CS presentation on a CS+ trial (i.e. CS-US), CS+ (16) = 5 seconds of CS presentation on a CS+ trial, Post CS+ (8) = 5 seconds post CS presentation on a CS+ trial. Pre CS- (2) = 5 seconds prior to CS presentation on a CS- trial (i.e. CS-noUS), CS- (32) = 5 seconds of CS presentation on a CS- trial, Post CS- (4) = 5 seconds post CS presentation on a CS- trial. 
Note: This data is all from block 2.

2) Per_Easy_EXP_Px/ Per_Hard_EXP_Px

ROW DATA

Row #: 1-23
Description: Each row represents one trial. There are 23 in total.
Data type: Each row contains the data for each trial, the column gives details of what is recorded for each trial. 

COLUMN DATA

Column #: 1
Name: Expectancy ratings
Description: Expectancy rating made during the CS presentation on that trial.
Labels: Increasing scale from 1 to 5, 1 = I definitely do not think the shock will happen, 3 = I do not know whether the shock will happen, 5 = I definitely think the shock will happen.
Note: 0 = no expectancy rating was made. Column 1 data is all from block 1.

Column #: 2
Name: Expectancy ratings
Description: Expectancy rating made during the CS presentation on that trial.
Labels: Increasing scale from 1 to 5, 1 = I definitely do not think the shock will happen, 3 = I do not know whether the shock will happen, 5 = I definitely think the shock will happen.
Note: 0 = no expectancy rating was made. Column 1 data is all from block 2.

3) Per_Easy_Seq1_Px/ Per_Hard_Seq1_Px

ROW DATA

Row #: 1-23
Description: Each row represents one trial. There are 23 trials in block 1. 
Data type: Each row contains the data for each trial, the column gives details of what is recorded for each trial.

COLUMN DATA

Column #: 1
Name: US presence
Description: Whether the US was presented on each trial.
Labels: 1 = US presented, 2 = US was not presented

Column #: 2
Name: Run length
Description: Run length measurement on each trial. Note the measurement is taken on the trial subsequent to the run
Labels: -3, -2, -1, 1, 2, 3
Note: 0 is presented for the first trial of every block as this does not provide a run length measure as there has not been any subsequent trials in the block

4) Per_Easy_Seq2_Px/ Per_Hard_Seq2_Px

ROW DATA

Row #: 1-23
Description: Each row represents one trial. There are 23 trials in block 2. 
Data type: Each row contains the data for each trial, the column gives details of what is recorded for each trial.

COLUMN DATA

Column #: 1
Name: US presence
Description: Whether the US was presented on each trial.
Labels: 1 = US presented, 2 = US was not presented

Column #: 2
Name: Run length
Description: Run length measurement on each trial. Note the measurement is taken on the trial subsequent to the run
Labels: -3, -2, -1, 1, 2, 3
Note: 0 is presented for the first trial of every block as this does not provide a run length measure as there has not been any subsequent trials in the block