Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Friday 15 May 2026
Morning (Time: 2 hours 15 minutes) Paper
reference 9PS0/01 Mark Scheme (Results)
Psychology
Advanced
Summer 2026
PAPER 1: Foundations in Psychology
You do not need any other materials. Total Marks
Instructions
•• Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
Information
Pearson Edexcel GCE In Psychology
•• The total mark for this paper is 90.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
9PS0/01
•• The list of formulae and statistical tables are printed at the start of this paper.
Candidates may use a calculator.
Advice Foundations in Psychology
•• Read each question carefully before you start to answer it.
Try to answer every question.
• Check your answers if you have time at the end.
Turn over
P79075RA
Pearson Education Ltd.
P:1/1/1/1/1/1
*P79075RA0136*
, Edexcel and BTEC Qualifications
FORMULAE AND STATISTICAL TABLES
Standard deviation (sample estimate)
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest
x
x
2 awarding body. We provide a wide range of qualifications including
academic, vocational, occupational and specific programmes for
n
1
he our qualifications websites at
or . Alternatively, you can get in touch
Spearman’s rank correlation coefficient
us page at
6
d2
1
n
n 2 1
Critical values for Spearman’s rank
Level of significance for a one-tailed test
0.05 0.025 0.01 0.005 0.0025
Level of significance for a two-tailed test
N 0.10 0.05 0.025 0.01 0.005
Pearson: helping people progress, everywhere
5 0.900 1.000 1.000 1.000 1.000
6 0.829 0.886 0.943 1.000 1.000
Pearson aspires to be the world’s leading learning company. Our aim is to help
7 0.714 0.786 0.893 0.929 0.964
everyone progress in their lives through education. We believe in every kind of
8 0.643 0.738 0.833 0.881 0.905
learning, for all kinds of people, wherever they are in the world. We’ve been
9 0.600 0.700 0.783 0.833 0.867
involved in education for over 150 years, and by working across 70 countries, in
10 0.564 0.648 0.745 0.794 0.830
100 languages, we have built an international reputation for our commitment to
11 0.536 0.618 0.709 0.755 0.800
high standards and raising achievement through innovation in education. Find
12 0.503 0.587 0.678 0.727 0.769
can help you and your students at:
13 0.484 0.560 0.648 0.703 0.747
14 0.464 0.538 0.626 0.679 0.723
15 0.446 0.521 0.604 0.654 0.700
16 0.429 0.503 0.582 0.635 0.679
17 0.414 0.485 0.566 0.615 0.662
18 0.401 0.472 0.550 0.600 0.643
19 0.391 0.460 0.535 0.584 0.628
20 0.380 0.447 0.520 0.570 0.612
21 0.370 0.435 0.508 0.556 0.599
22 0.361 0.425 0.496 0.544 0.586
23 0.353 0.415 0.486 0.532 0.573
24 0.344 0.406 0.476 0.521 0.562
25 0.337 0.398 0.466 0.511 0.551
26 0.331 0.390 0.457 0.501 0.541 Summer 2026
Question Paper Log Number P79075RA
27 0.324 0.382 0.448 0.491 0.531
Publication Code 9PS0_01_2606_MS
28 0.317 0.375 0.440 0.483 0.522 the material in this publication is
29 0.312 0.368 0.433 0.475 0.513 Pearson Education Ltd
30 0.306 0.362 0.425 0.467 0.504
The calculated value must be equal to or exceed the critical value in this table for
significance to be shown.
2
1 DD02572
1/1
*P79075RA0236*
©2020 Pearson Education Ltd.
, General Marking Guidance
Chi-squared distribution formula
• All candidates must receive the same treatment. Examiners must mark the first
O
E
2
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
candidate in exactly the same way as they mark the last.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
X2 df
r
1
c
1
E • Mark schemes should be applied positively. Candidates must be rewarded for what
Critical values for chi-squared distribution they have shown they can do rather than penalised for omissions.
• Examiners should mark according to the mark scheme not according to their
Level of significance for a one-tailed test
perception of where the grade boundaries may lie.
0.10 0.05 0.025 0.01 0.005 0.0005
• There is no ceiling on achievement. All marks on the mark scheme should be used
Level of significance for a two-tailed test
df 0.20 0.10 0.05 0.025 0.01 0.001 appropriately.
1 1.64 2.71 3.84 5.02 6.64 10.83 • All the marks on the mark scheme are designed to be awarded. Examiners should
2 3.22 4.61 5.99 7.38 9.21 13.82 always award full marks if deserved, i.e. if the answer matches the mark scheme.
3 4.64 6.25 7.82 9.35 11.35 16.27
Examiners should also be prepared to award zero marks if the candidate’s response
4 5.99 7.78 9.49 11.14 13.28 18.47
5 7.29 9.24 11.07 12.83 15.09 20.52 is not worthy of credit according to the mark scheme.
6 8.56 10.65 12.59 14.45 16.81 22.46 • Where some judgement is required, mark schemes will provide the principles by
7 9.80 12.02 14.07 16.01 18.48 24.32 which marks will be awarded and exemplification may be limited.
8 11.03 13.36 15.51 17.54 20.09 26.12 • When examiners are in doubt regarding the application of the mark scheme to a
9 12.24 14.68 16.92 19.02 21.67 27.88
candidate’s response, the team leader must be consulted.
10 13.44 15.99 18.31 20.48 23.21 29.59
• Crossed out work should be marked UNLESS the candidate has replaced it with an
11 14.63 17.28 19.68 21.92 24.73 31.26
alternative response.
12 15.81 18.55 21.03 23.34 26.22 32.91
13 16.99 19.81 22.36 24.74 27.69 34.53
14 18.15 21.06 23.69 26.12 29.14 36.12
15 19.31 22.31 25.00 27.49 30.58 37.70
16 20.47 23.54 26.30 28.85 32.00 39.25
17 21.62 24.77 27.59 30.19 33.41 40.79
18 22.76 25.99 28.87 31.53 34.81 42.31
19 23.90 27.20 30.14 32.85 36.19 43.82
20 25.04 28.41 31.41 34.17 37.57 45.32
21 26.17 29.62 32.67 35.48 38.93 46.80
22 27.30 30.81 33.92 36.78 40.29 48.27
23 28.43 32.01 35.17 38.08 41.64 49.73
24 29.55 33.20 36.42 39.36 42.98 51.18
25 30.68 34.38 37.65 40.65 44.31 52.62
26 31.80 35.56 38.89 41.92 45.64 54.05
27 32.91 36.74 40.11 43.20 46.96 55.48
28 34.03 37.92 41.34 44.46 48.28 56.89
29 35.14 39.09 42.56 45.72 49.59 58.30
30 36.25 40.26 43.77 46.98 50.89 59.70
40 47.27 51.81 55.76 59.34 63.69 73.40
50 58.16 63.17 67.51 71.42 76.15 86.66
60 68.97 74.40 79.08 83.30 88.38 99.61
70 79.72 85.53 90.53 95.02 100.43 112.32
The calculated value must be equal to or exceed the critical value in this table for
significance to be shown.
3
2
DD02572
1/1
*P79075RA0336*
©2020 Pearson Education Ltd.
Turn over
, Social Psychology
Mann-Whitney U test formulae Question Answer Mark
na
na
1
Number
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
U a na nb
Ra AO1 (2 marks)
2 1 (2)
n
n
1
Up to two marks for stating two findings from Milgram’s research.
U b na nb
b b Rb
2
For example:
(U is the smaller of Ua and Ub)
• In the baseline condition, all participants went up to 300 volts in
Critical values for the Mann-Whitney U test obeying the experimenter in shocking the learner (1).
• In the baseline condition, 65% obeyed orders and gave the
p 0.05 (one-tailed), p 0.10 (two-tailed) learner maximum shock of 450 volts (1).
• In Experiment 13, 20% of participants administering the
Nb maximum 450 volt shock when an ordinary participant, rather
than the experimenter, gave the orders to continue (1).
• In the baseline study, participants showed signs of stress and
Na tension in obeying the authority figure, including sweating,
nervous laughter, and expressing concern for the learner's welfare
(1).
Look for other reasonable marking points.
Question Answer Mark
Number
AO1 (2 marks)
2 (a) (2)
Up to two marks for a description of social comparison.
For example:
• The in-group would view themselves in a more favourable light
than those in the out-group demonstrating in-group favouritism
(1). The in-group needs to compare well against the out-group in
order to maintain positive self-esteem, therefore would show
negative bias against the out-group (1).
0 138
Look for other reasonable marking points.
4
3 DD02572
1/1
*P79075RA0436*
©2020 Pearson Education Ltd.
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Friday 15 May 2026
Morning (Time: 2 hours 15 minutes) Paper
reference 9PS0/01 Mark Scheme (Results)
Psychology
Advanced
Summer 2026
PAPER 1: Foundations in Psychology
You do not need any other materials. Total Marks
Instructions
•• Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
Information
Pearson Edexcel GCE In Psychology
•• The total mark for this paper is 90.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
9PS0/01
•• The list of formulae and statistical tables are printed at the start of this paper.
Candidates may use a calculator.
Advice Foundations in Psychology
•• Read each question carefully before you start to answer it.
Try to answer every question.
• Check your answers if you have time at the end.
Turn over
P79075RA
Pearson Education Ltd.
P:1/1/1/1/1/1
*P79075RA0136*
, Edexcel and BTEC Qualifications
FORMULAE AND STATISTICAL TABLES
Standard deviation (sample estimate)
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest
x
x
2 awarding body. We provide a wide range of qualifications including
academic, vocational, occupational and specific programmes for
n
1
he our qualifications websites at
or . Alternatively, you can get in touch
Spearman’s rank correlation coefficient
us page at
6
d2
1
n
n 2 1
Critical values for Spearman’s rank
Level of significance for a one-tailed test
0.05 0.025 0.01 0.005 0.0025
Level of significance for a two-tailed test
N 0.10 0.05 0.025 0.01 0.005
Pearson: helping people progress, everywhere
5 0.900 1.000 1.000 1.000 1.000
6 0.829 0.886 0.943 1.000 1.000
Pearson aspires to be the world’s leading learning company. Our aim is to help
7 0.714 0.786 0.893 0.929 0.964
everyone progress in their lives through education. We believe in every kind of
8 0.643 0.738 0.833 0.881 0.905
learning, for all kinds of people, wherever they are in the world. We’ve been
9 0.600 0.700 0.783 0.833 0.867
involved in education for over 150 years, and by working across 70 countries, in
10 0.564 0.648 0.745 0.794 0.830
100 languages, we have built an international reputation for our commitment to
11 0.536 0.618 0.709 0.755 0.800
high standards and raising achievement through innovation in education. Find
12 0.503 0.587 0.678 0.727 0.769
can help you and your students at:
13 0.484 0.560 0.648 0.703 0.747
14 0.464 0.538 0.626 0.679 0.723
15 0.446 0.521 0.604 0.654 0.700
16 0.429 0.503 0.582 0.635 0.679
17 0.414 0.485 0.566 0.615 0.662
18 0.401 0.472 0.550 0.600 0.643
19 0.391 0.460 0.535 0.584 0.628
20 0.380 0.447 0.520 0.570 0.612
21 0.370 0.435 0.508 0.556 0.599
22 0.361 0.425 0.496 0.544 0.586
23 0.353 0.415 0.486 0.532 0.573
24 0.344 0.406 0.476 0.521 0.562
25 0.337 0.398 0.466 0.511 0.551
26 0.331 0.390 0.457 0.501 0.541 Summer 2026
Question Paper Log Number P79075RA
27 0.324 0.382 0.448 0.491 0.531
Publication Code 9PS0_01_2606_MS
28 0.317 0.375 0.440 0.483 0.522 the material in this publication is
29 0.312 0.368 0.433 0.475 0.513 Pearson Education Ltd
30 0.306 0.362 0.425 0.467 0.504
The calculated value must be equal to or exceed the critical value in this table for
significance to be shown.
2
1 DD02572
1/1
*P79075RA0236*
©2020 Pearson Education Ltd.
, General Marking Guidance
Chi-squared distribution formula
• All candidates must receive the same treatment. Examiners must mark the first
O
E
2
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
candidate in exactly the same way as they mark the last.
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
X2 df
r
1
c
1
E • Mark schemes should be applied positively. Candidates must be rewarded for what
Critical values for chi-squared distribution they have shown they can do rather than penalised for omissions.
• Examiners should mark according to the mark scheme not according to their
Level of significance for a one-tailed test
perception of where the grade boundaries may lie.
0.10 0.05 0.025 0.01 0.005 0.0005
• There is no ceiling on achievement. All marks on the mark scheme should be used
Level of significance for a two-tailed test
df 0.20 0.10 0.05 0.025 0.01 0.001 appropriately.
1 1.64 2.71 3.84 5.02 6.64 10.83 • All the marks on the mark scheme are designed to be awarded. Examiners should
2 3.22 4.61 5.99 7.38 9.21 13.82 always award full marks if deserved, i.e. if the answer matches the mark scheme.
3 4.64 6.25 7.82 9.35 11.35 16.27
Examiners should also be prepared to award zero marks if the candidate’s response
4 5.99 7.78 9.49 11.14 13.28 18.47
5 7.29 9.24 11.07 12.83 15.09 20.52 is not worthy of credit according to the mark scheme.
6 8.56 10.65 12.59 14.45 16.81 22.46 • Where some judgement is required, mark schemes will provide the principles by
7 9.80 12.02 14.07 16.01 18.48 24.32 which marks will be awarded and exemplification may be limited.
8 11.03 13.36 15.51 17.54 20.09 26.12 • When examiners are in doubt regarding the application of the mark scheme to a
9 12.24 14.68 16.92 19.02 21.67 27.88
candidate’s response, the team leader must be consulted.
10 13.44 15.99 18.31 20.48 23.21 29.59
• Crossed out work should be marked UNLESS the candidate has replaced it with an
11 14.63 17.28 19.68 21.92 24.73 31.26
alternative response.
12 15.81 18.55 21.03 23.34 26.22 32.91
13 16.99 19.81 22.36 24.74 27.69 34.53
14 18.15 21.06 23.69 26.12 29.14 36.12
15 19.31 22.31 25.00 27.49 30.58 37.70
16 20.47 23.54 26.30 28.85 32.00 39.25
17 21.62 24.77 27.59 30.19 33.41 40.79
18 22.76 25.99 28.87 31.53 34.81 42.31
19 23.90 27.20 30.14 32.85 36.19 43.82
20 25.04 28.41 31.41 34.17 37.57 45.32
21 26.17 29.62 32.67 35.48 38.93 46.80
22 27.30 30.81 33.92 36.78 40.29 48.27
23 28.43 32.01 35.17 38.08 41.64 49.73
24 29.55 33.20 36.42 39.36 42.98 51.18
25 30.68 34.38 37.65 40.65 44.31 52.62
26 31.80 35.56 38.89 41.92 45.64 54.05
27 32.91 36.74 40.11 43.20 46.96 55.48
28 34.03 37.92 41.34 44.46 48.28 56.89
29 35.14 39.09 42.56 45.72 49.59 58.30
30 36.25 40.26 43.77 46.98 50.89 59.70
40 47.27 51.81 55.76 59.34 63.69 73.40
50 58.16 63.17 67.51 71.42 76.15 86.66
60 68.97 74.40 79.08 83.30 88.38 99.61
70 79.72 85.53 90.53 95.02 100.43 112.32
The calculated value must be equal to or exceed the critical value in this table for
significance to be shown.
3
2
DD02572
1/1
*P79075RA0336*
©2020 Pearson Education Ltd.
Turn over
, Social Psychology
Mann-Whitney U test formulae Question Answer Mark
na
na
1
Number
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
U a na nb
Ra AO1 (2 marks)
2 1 (2)
n
n
1
Up to two marks for stating two findings from Milgram’s research.
U b na nb
b b Rb
2
For example:
(U is the smaller of Ua and Ub)
• In the baseline condition, all participants went up to 300 volts in
Critical values for the Mann-Whitney U test obeying the experimenter in shocking the learner (1).
• In the baseline condition, 65% obeyed orders and gave the
p 0.05 (one-tailed), p 0.10 (two-tailed) learner maximum shock of 450 volts (1).
• In Experiment 13, 20% of participants administering the
Nb maximum 450 volt shock when an ordinary participant, rather
than the experimenter, gave the orders to continue (1).
• In the baseline study, participants showed signs of stress and
Na tension in obeying the authority figure, including sweating,
nervous laughter, and expressing concern for the learner's welfare
(1).
Look for other reasonable marking points.
Question Answer Mark
Number
AO1 (2 marks)
2 (a) (2)
Up to two marks for a description of social comparison.
For example:
• The in-group would view themselves in a more favourable light
than those in the out-group demonstrating in-group favouritism
(1). The in-group needs to compare well against the out-group in
order to maintain positive self-esteem, therefore would show
negative bias against the out-group (1).
0 138
Look for other reasonable marking points.
4
3 DD02572
1/1
*P79075RA0436*
©2020 Pearson Education Ltd.
